diff --git a/python/core/qgis.sip b/python/core/qgis.sip
index 4a054acef03..1ae0daa53b6 100644
--- a/python/core/qgis.sip
+++ b/python/core/qgis.sip
@@ -135,7 +135,7 @@ class QGis
     static double fromUnitToUnitFactor( QGis::UnitType fromUnit, QGis::UnitType toUnit );
 
     /** Converts a string to a double in a permissive way, eg allowing for incorrect
-     * numbers of digits between thousand seperators
+     * numbers of digits between thousand separators
      * @param string string to convert
      * @param ok will be set to true if conversion was successful
      * @returns string converted to double if possible
@@ -145,7 +145,7 @@ class QGis
     static double permissiveToDouble( QString string, bool& ok );
 
     /** Converts a string to an integer in a permissive way, eg allowing for incorrect
-     * numbers of digits between thousand seperators
+     * numbers of digits between thousand separators
      * @param string string to convert
      * @param ok will be set to true if conversion was successful
      * @returns string converted to int if possible
diff --git a/src/core/effects/qgseffectstack.h b/src/core/effects/qgseffectstack.h
index 794e3830f15..f2b2a7caa5e 100644
--- a/src/core/effects/qgseffectstack.h
+++ b/src/core/effects/qgseffectstack.h
@@ -90,7 +90,7 @@ class CORE_EXPORT QgsEffectStack : public QgsPaintEffect
      */
     bool insertEffect( const int index, QgsPaintEffect* effect );
 
-    /** Replaces the effect at a speficied position within the stack.
+    /** Replaces the effect at a specified position within the stack.
      * @param index position of effect to replace
      * @param effect QgsPaintEffect to replace with. Ownership of the effect will be
      * transferred to the stack object.
diff --git a/src/core/qgis.cpp b/src/core/qgis.cpp
index d2087f17682..1120a625fa6 100644
--- a/src/core/qgis.cpp
+++ b/src/core/qgis.cpp
@@ -187,14 +187,14 @@ double QGis::fromUnitToUnitFactor( QGis::UnitType fromUnit, QGis::UnitType toUni
 
 double QGis::permissiveToDouble( QString string, bool &ok )
 {
-  //remove any thousands seperators
+  //remove any thousands separators
   string.remove( QLocale::system().groupSeparator() );
   return QLocale::system().toDouble( string, &ok );
 }
 
 int QGis::permissiveToInt( QString string, bool &ok )
 {
-  //remove any thousands seperators
+  //remove any thousands separators
   string.remove( QLocale::system().groupSeparator() );
   return QLocale::system().toInt( string, &ok );
 }
diff --git a/src/core/qgis.h b/src/core/qgis.h
index f15e4632814..fb6dfd8dd84 100644
--- a/src/core/qgis.h
+++ b/src/core/qgis.h
@@ -252,7 +252,7 @@ class CORE_EXPORT QGis
     static double fromUnitToUnitFactor( QGis::UnitType fromUnit, QGis::UnitType toUnit );
 
     /** Converts a string to a double in a permissive way, eg allowing for incorrect
-     * numbers of digits between thousand seperators
+     * numbers of digits between thousand separators
      * @param string string to convert
      * @param ok will be set to true if conversion was successful
      * @returns string converted to double if possible
@@ -262,7 +262,7 @@ class CORE_EXPORT QGis
     static double permissiveToDouble( QString string, bool& ok );
 
     /** Converts a string to an integer in a permissive way, eg allowing for incorrect
-     * numbers of digits between thousand seperators
+     * numbers of digits between thousand separators
      * @param string string to convert
      * @param ok will be set to true if conversion was successful
      * @returns string converted to int if possible
diff --git a/src/core/qgspallabeling.h b/src/core/qgspallabeling.h
index 51df15c7bf9..75b71487704 100644
--- a/src/core/qgspallabeling.h
+++ b/src/core/qgspallabeling.h
@@ -834,7 +834,7 @@ class CORE_EXPORT QgsPalLabeling : public QgsLabelingEngineInterface
      */
     static bool geometryRequiresPreparation( const QgsGeometry *geometry, const QgsRenderContext &context, const QgsCoordinateTransform *ct, QgsGeometry *clipGeometry = 0 );
 
-    /** Splits a text string to a list of seperate lines, using a specified wrap character.
+    /** Splits a text string to a list of separate lines, using a specified wrap character.
      * The text string will be split on either newline characters or the wrap character.
      * @param text text string to split
      * @param wrapCharacter additional character to wrap on
diff --git a/src/gui/qgsblendmodecombobox.h b/src/gui/qgsblendmodecombobox.h
index 1d2828826ca..0635a6eecf2 100644
--- a/src/gui/qgsblendmodecombobox.h
+++ b/src/gui/qgsblendmodecombobox.h
@@ -37,7 +37,7 @@ class GUI_EXPORT QgsBlendModeComboBox : public QComboBox
     //! Function to set the selected blend mode from QPainter::CompositionMode
     void setBlendMode( QPainter::CompositionMode blendMode );
   private:
-    //! Returns a list of grouped blend modes (with seperators)
+    //! Returns a list of grouped blend modes (with separators)
     QStringList blendModesList() const;
 
     //! Used to map blend modes across to their corresponding
diff --git a/src/gui/qgshistogramwidget.h b/src/gui/qgshistogramwidget.h
index 383c44e7617..fb48796d415 100644
--- a/src/gui/qgshistogramwidget.h
+++ b/src/gui/qgshistogramwidget.h
@@ -104,14 +104,14 @@ class GUI_EXPORT QgsHistogramWidget : public QWidget, private Ui::QgsHistogramWi
      */
     QBrush brush() const { return mBrush; }
 
-    /** Sets the graduated ranges associated with the histogram. If set, the ranges will be used to colour the histogram
+    /** Sets the graduated ranges associated with the histogram. If set, the ranges will be used to color the histogram
      * bars and for showing vertical dividers at the histogram breaks.
      * @param ranges graduated range list
      * @see graduatedRanges
      */
     void setGraduatedRanges( const QgsRangeList& ranges );
 
-    /** Returns the graduated ranges associated with the histogram. If set, the ranges will be used to colour the histogram
+    /** Returns the graduated ranges associated with the histogram. If set, the ranges will be used to color the histogram
      * bars and for showing vertical dividers at the histogram breaks.
      * @returns graduated range list
      * @see setGraduatedRanges
diff --git a/src/plugins/dxf2shp_converter/dxflib/src/dl_dxf.cpp b/src/plugins/dxf2shp_converter/dxflib/src/dl_dxf.cpp
index 152b9d7b5f6..1c457f77a6d 100644
--- a/src/plugins/dxf2shp_converter/dxflib/src/dl_dxf.cpp
+++ b/src/plugins/dxf2shp_converter/dxflib/src/dl_dxf.cpp
@@ -928,7 +928,7 @@ void DL_Dxf::addTextStyle(DL_CreationInterface* creationInterface) {
         name,
         // flags
         getIntValue(70, 0),
-        // fixed text heigth:
+        // fixed text height:
         getRealValue(40, 0.0),
         // width factor:
         getRealValue(41, 0.0),
diff --git a/src/providers/postgres/qgspostgresfeatureiterator.cpp b/src/providers/postgres/qgspostgresfeatureiterator.cpp
index b01d35ea3de..aeb7629b914 100644
--- a/src/providers/postgres/qgspostgresfeatureiterator.cpp
+++ b/src/providers/postgres/qgspostgresfeatureiterator.cpp
@@ -301,7 +301,7 @@ QString QgsPostgresFeatureIterator::whereClauseRect()
                    .arg( mConn->majorVersion() < 2 ? "intersects" : "st_intersects" )
                    .arg( mConn->majorVersion() < 2 ? "curvetoline" : "st_curvetoline" )
                    .arg( QgsPostgresConn::quotedIdentifier( mSource->mGeometryColumn ) )
-                   .arg( castToPatch ? "::geometry" : "" )
+                   .arg( castToGeometry ? "::geometry" : "" )
                    .arg( qBox );
   }
 
diff --git a/tests/src/core/testqgis.cpp b/tests/src/core/testqgis.cpp
index dac9fea08a8..c65b748c7db 100644
--- a/tests/src/core/testqgis.cpp
+++ b/tests/src/core/testqgis.cpp
@@ -84,7 +84,7 @@ void TestQGis::permissiveToDouble()
   result = QGis::permissiveToDouble( QString( "a" ), ok );
   QVERIFY( !ok );
 
-  //messy input (invalid thousand seperator position), should still be converted
+  //messy input (invalid thousand separator position), should still be converted
   ok = false;
   result = QGis::permissiveToDouble( QString( "10%0100" ).arg( QLocale::system().groupSeparator() ), ok );
   QVERIFY( ok );
@@ -112,7 +112,7 @@ void TestQGis::permissiveToInt()
   result = QGis::permissiveToInt( QString( "a" ), ok );
   QVERIFY( !ok );
 
-  //messy input (invalid thousand seperator position), should still be converted
+  //messy input (invalid thousand separator position), should still be converted
   ok = false;
   result = QGis::permissiveToInt( QString( "10%0100" ).arg( QLocale::system().groupSeparator() ), ok );
   QVERIFY( ok );
diff --git a/tests/src/gui/testqgsscalecombobox.cpp b/tests/src/gui/testqgsscalecombobox.cpp
index 28bc66dbbd8..a4a71dd184d 100644
--- a/tests/src/gui/testqgsscalecombobox.cpp
+++ b/tests/src/gui/testqgsscalecombobox.cpp
@@ -96,7 +96,7 @@ void TestQgsScaleComboBox::basic()
   QCOMPARE( s->scaleString(), QString( "1:%1" ).arg( str ) );
   QCOMPARE( s->scale(), ( double ) 1.0 / ( double ) 1000000.0 );
 
-  // Testing conversion from number to "1:x,000" with wonky seperators
+  // Testing conversion from number to "1:x,000" with wonky separators
   //(eg four digits between thousands, which should be fixed automatically)
   l->setText( "" );
   str = QString( "1%010000%01000" ).arg( QLocale::system().groupSeparator() );