diff --git a/python/core/auto_generated/geometry/qgstriangle.sip.in b/python/core/auto_generated/geometry/qgstriangle.sip.in
index 2ae53b3adb0..8dcc84c65d2 100644
--- a/python/core/auto_generated/geometry/qgstriangle.sip.in
+++ b/python/core/auto_generated/geometry/qgstriangle.sip.in
@@ -226,7 +226,7 @@ Is the triangle right-angled?
 
     bool isScalene( double lengthTolerance = 0.0001 ) const;
 %Docstring
-Is the triangle scalene (all sides have differen lengths)?
+Is the triangle scalene (all sides have different lengths)?
 
 :param lengthTolerance: The tolerance to use
 
diff --git a/python/core/auto_generated/qgsvectorlayer.sip.in b/python/core/auto_generated/qgsvectorlayer.sip.in
index 5a997af5afe..f2747810c7a 100644
--- a/python/core/auto_generated/qgsvectorlayer.sip.in
+++ b/python/core/auto_generated/qgsvectorlayer.sip.in
@@ -2530,7 +2530,7 @@ Signal emitted, when an edit command successfully ended
 
     void editCommandDestroyed();
 %Docstring
-Signal emitted, whan an edit command is destroyed
+Signal emitted, when an edit command is destroyed
 
 .. note::
 
diff --git a/python/core/auto_generated/raster/qgsrasterpipe.sip.in b/python/core/auto_generated/raster/qgsrasterpipe.sip.in
index b12a96689eb..1e4ab322a88 100644
--- a/python/core/auto_generated/raster/qgsrasterpipe.sip.in
+++ b/python/core/auto_generated/raster/qgsrasterpipe.sip.in
@@ -95,7 +95,7 @@ Returns true on success *
 
     bool canSetOn( int idx, bool on );
 %Docstring
-Test if interface at index may be swithed on/off
+Test if interface at index may be switched on/off
 %End
 
     QgsRasterDataProvider *provider() const;
diff --git a/python/gui/auto_generated/auth/qgsauthsslconfigwidget.sip.in b/python/gui/auto_generated/auth/qgsauthsslconfigwidget.sip.in
index f7cd8d347bd..3874645ccc2 100644
--- a/python/gui/auto_generated/auth/qgsauthsslconfigwidget.sip.in
+++ b/python/gui/auto_generated/auth/qgsauthsslconfigwidget.sip.in
@@ -61,7 +61,7 @@ Gets the host:port to associate with the server certificate
 
     QSsl::SslProtocol sslProtocol();
 %Docstring
-Gets the SSL protocl used for connections
+Gets the SSL protocol used for connections
 %End
 
     const QList<QSslError::SslError> sslIgnoreErrorEnums();
diff --git a/python/gui/auto_generated/qgsattributetypeloaddialog.sip.in b/python/gui/auto_generated/qgsattributetypeloaddialog.sip.in
index a6ee788ce7d..ba442298177 100644
--- a/python/gui/auto_generated/qgsattributetypeloaddialog.sip.in
+++ b/python/gui/auto_generated/qgsattributetypeloaddialog.sip.in
@@ -37,7 +37,7 @@ Sets predefined vector layer for selection of data
 %Docstring
 Returns the value map which is currently active.
 
-:return: value map of vlues selected from layer
+:return: value map of values selected from layer
 %End
 
     bool insertNull();
diff --git a/python/gui/auto_generated/qgsrasterformatsaveoptionswidget.sip.in b/python/gui/auto_generated/qgsrasterformatsaveoptionswidget.sip.in
index 900277e4c1d..95c55bda750 100644
--- a/python/gui/auto_generated/qgsrasterformatsaveoptionswidget.sip.in
+++ b/python/gui/auto_generated/qgsrasterformatsaveoptionswidget.sip.in
@@ -90,7 +90,7 @@ Set pyramids format to use
 
     void helpOptions();
 %Docstring
-Opens window with options desctiption for given provider
+Opens window with options description for given provider
 and output format
 %End
 
diff --git a/python/server/auto_generated/qgsbufferserverresponse.sip.in b/python/server/auto_generated/qgsbufferserverresponse.sip.in
index 4315d081224..a436fbb4636 100644
--- a/python/server/auto_generated/qgsbufferserverresponse.sip.in
+++ b/python/server/auto_generated/qgsbufferserverresponse.sip.in
@@ -54,7 +54,7 @@ Returns all the headers
     virtual bool headersSent() const;
 
 %Docstring
-Returns true if the headers have alredy been sent
+Returns true if the headers have already been sent
 %End
 
     virtual void setStatusCode( int code );
diff --git a/python/server/auto_generated/qgsserverresponse.sip.in b/python/server/auto_generated/qgsserverresponse.sip.in
index ee585ef161c..19a7b0b51d5 100644
--- a/python/server/auto_generated/qgsserverresponse.sip.in
+++ b/python/server/auto_generated/qgsserverresponse.sip.in
@@ -52,7 +52,7 @@ Returns the header value
 
     virtual bool headersSent() const = 0;
 %Docstring
-Returns true if the headers have alredy been sent
+Returns true if the headers have already been sent
 %End
 
 
diff --git a/scripts/spell_check/check_spelling.sh b/scripts/spell_check/check_spelling.sh
index 669deed7e5f..71f0589deaf 100755
--- a/scripts/spell_check/check_spelling.sh
+++ b/scripts/spell_check/check_spelling.sh
@@ -23,7 +23,7 @@
 # fi
 
 # extensions or files that should be excluded from file list if :% is appended in the spelling.dat file
-EXCLUDE_SCRIPT_LIST='(\.(xml|svg|sip|t2t|pl|sh|qgs|badquote|cmake(\.in)?)|^(debian/copyright|cmake_templates/.*|INSTALL|NEWS|tests/testdata/labeling/README.rst|tests/testdata/font/QGIS-Vera/COPYRIGHT.TXT|doc/(news|INSTALL)\.html))$'
+EXCLUDE_SCRIPT_LIST='(\.(xml|svg|sip|t2t|pl|sh|qgs|badquote|cmake(\.in)?)|^(debian/copyright|cmake_templates/.*|INSTALL|NEWS|tests/testdata/labeling/README.rst|tests/testdata/font/QGIS-Vera/COPYRIGHT.TXT|doc/(news|INSTALL)\.html|debian/build/))$'
 
 DIR=$(git rev-parse --show-toplevel)/scripts/spell_check
 
diff --git a/scripts/spell_check/spelling.dat b/scripts/spell_check/spelling.dat
index 72ef2f9ac88..4f9220764f3 100644
--- a/scripts/spell_check/spelling.dat
+++ b/scripts/spell_check/spelling.dat
@@ -353,6 +353,7 @@ alcholic:alcoholic
 alcohal:alcohol
 alcoholical:alcoholic
 aleady:already
+alredy:already
 aledge:allege:*
 aledged:alleged
 aledges:alleges:*
@@ -1675,6 +1676,7 @@ consumate:consummate
 consumated:consummated
 contaiminate:contaminate
 containes:contains
+containint:containing
 containg:containing
 containging:containing
 containting:containing
@@ -1848,6 +1850,7 @@ coutners:counters
 coverted:converted
 coypright:copyright
 cpoy:copy
+craete:create
 creaeted:created
 creationg:creating
 creche:crèche
@@ -1913,6 +1916,7 @@ deamons:daemons
 deatch:detach
 deatched:detached
 deatches:detaches
+deactive:deactivate
 deatching:detaching
 debain:Debian
 debateable:debatable
@@ -1949,6 +1953,7 @@ decribe:describe
 decribed:described
 decribes:describes
 decribing:describing
+desctiption:description
 decription:description
 decriptions:descriptions
 decriptor:descriptor
@@ -2208,6 +2213,7 @@ diferrent:different
 diffcult:difficult
 diffculties:difficulties
 diffculty:difficulty
+differen:different
 differenciate:differentiate
 differenciated:differentiated
 differenciates:differentiates
@@ -2392,6 +2398,7 @@ documetation:documentation
 documment:document
 documments:documents
 doens't:doesn't
+doesnot:doesn't
 doens:does
 does'nt:doesn't
 does't:doesn't
@@ -2763,6 +2770,7 @@ exagerrating:exaggerating
 examinated:examined
 exampt:exempt
 exapansion:expansion
+expaning:expanding
 exapmle:example
 exapmles:examples
 excact:exact
@@ -2951,6 +2959,7 @@ favoutrable:favourable
 feasable:feasible
 featre:feature
 featue:feature
+feautre:feature
 featues:features
 feauture:feature
 feautures:features
@@ -3275,6 +3284,7 @@ guranteeing:guaranteeing
 gurantees:guarantees
 guttaral:guttural
 gutteral:guttural
+hammmer:hammer
 habaeus:habeas
 habeus:habeas
 Habsbourg:Habsburg
@@ -3417,6 +3427,7 @@ hopefuly:hopefully
 hoppefully:hopefully
 horrifing:horrifying
 horzontal:horizontal
+horizonal:horizontal
 horzontally:horizontally
 hosited:hoisted
 hospitible:hospitable
@@ -4120,6 +4131,7 @@ konw:know
 konwn:known
 konws:knows
 kwno:know
+leniant:lenient
 labatory:laboratory
 labelling:labeling
 labled:labeled
@@ -5509,6 +5521,7 @@ protable:portable
 protaganist:protagonist
 protaganists:protagonists
 protcol:protocol
+protocl:protocol
 protecion:protection
 protocal:protocol
 protocals:protocols
@@ -6054,6 +6067,8 @@ retores:restores
 retoring:restoring
 retransmited:retransmitted
 retreive:retrieve
+retreiving:retrieving
+retieve:retrieve
 retreived:retrieved
 retrive:retrieve
 retrived:retrieved
@@ -6195,6 +6210,7 @@ scince:science
 scinece:science
 scirpt:script
 scoll:scroll
+crolls:scrolls
 scolling:scrolling
 screenwrighter:screenwriter
 scriping:scripting
@@ -6386,6 +6402,7 @@ slashs:slashes
 slaugterhouses:slaughterhouses
 slection:selection
 slighly:slightly
+sightly:slightly
 sligth:slight
 sligthly:slightly
 slippy:slippery
@@ -6489,6 +6506,7 @@ speices:species
 speling:spelling
 spendour:splendour
 spermatozoan:spermatozoon
+spliting:splitting
 splitted:split
 spoace:space
 sponser:sponsor
@@ -6802,6 +6820,7 @@ swaping:swapping
 swepth:swept
 swiming:swimming
 switchs:switches:*
+swithed:switched
 syas:says
 syle:style
 syles:styles
@@ -6857,6 +6876,9 @@ sytems:systems
 sythesis:synthesis
 sytle:style
 tabacco:tobacco
+triange:triangle
+toogle:toggle
+fron:from
 tahn:than
 taht:that
 talekd:talked
@@ -7179,6 +7201,7 @@ uncertainities:uncertainties
 uncertainity:uncertainty
 unchallengable:unchallengeable
 unchangable:unchangeable
+comon:common
 uncoment:uncomment
 uncomented:uncommented
 uncomenting:uncommenting
@@ -7393,6 +7416,7 @@ vaieties:varieties
 vaild:valid
 vailidty:validity
 valetta:valletta
+vlues:values
 validing:validating
 valied:valid
 valu:value
@@ -7530,6 +7554,7 @@ wereabouts:whereabouts
 werent:weren't
 wether:whether
 whant:want
+whan:when
 whants:wants
 whataver:whatever
 whcih:which
diff --git a/src/gui/qgsnewhttpconnection.cpp b/src/gui/qgsnewhttpconnection.cpp
index 820e1fd65fa..096267bdf71 100644
--- a/src/gui/qgsnewhttpconnection.cpp
+++ b/src/gui/qgsnewhttpconnection.cpp
@@ -49,7 +49,7 @@ QgsNewHttpConnection::QgsNewHttpConnection( QWidget *parent, ConnectionTypes typ
   // but for some strange reason a different hardcoded key was used instead.
   // WFS and WMS credentials were mixed with the same key WMS.
   // Only WMS and WFS providers are using QgsNewHttpConnection at this moment
-  // using connection-wms and connection-wfs -> parse credential key fro it.
+  // using connection-wms and connection-wfs -> parse credential key from it.
   mCredentialsBaseKey = mBaseKey.split( '-' ).last().toUpper();
 
   txtName->setValidator( new QRegExpValidator( QRegExp( "[^\\/]+" ), txtName ) );
diff --git a/src/server/services/wfs/qgswfs.cpp b/src/server/services/wfs/qgswfs.cpp
index 0aaa37f05f2..c4fb271120a 100644
--- a/src/server/services/wfs/qgswfs.cpp
+++ b/src/server/services/wfs/qgswfs.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
-                              qgswms.cpp
+                              qgswfs.cpp
                               -------------------------
   begin                : December 20 , 2016
   copyright            : (C) 2007 by Marco Hugentobler  ( parts from qgswmshandler)
diff --git a/src/server/services/wfs/qgswfsutils.cpp b/src/server/services/wfs/qgswfsutils.cpp
index b42ecb2c7a8..55432a93b32 100644
--- a/src/server/services/wfs/qgswfsutils.cpp
+++ b/src/server/services/wfs/qgswfsutils.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
-                              qgsfssutils.cpp
+                              qgswfssutils.cpp
                               -------------------------
   begin                : December 20 , 2016
   copyright            : (C) 2007 by Marco Hugentobler  ( parts from qgswmshandler)