diff --git a/Makefile b/Makefile
index 1a188635..1ea015aa 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,7 @@ zips/packages/Natural_Earth_quick_start.zip: \
 	cp README.md packages/Natural_Earth_quick_start/README.md
 	cp VERSION packages/Natural_Earth_quick_start/VERSION
 
-	rm $@
+	rm -f $@
 	zip -r $@ packages/Natural_Earth_quick_start/
 	cp $@ archive/Natural_Earth_quick_start_$(VERSION).zip
 	
@@ -690,7 +690,7 @@ zips/10m_cultural/ne_10m_parks_and_protected_lands.zip: \
 	curl http://www.naturalearthdata.com/downloads/10m-cultural-vectors/parks-and-protected-lands/ > 10m_cultural/ne_10m_parks_and_protected_lands_point.README.html
 	zip -j -r $@ 10m_cultural/ne_10m_parks_and_protected_lands*.*
 	cp $@ archive/ne_10m_parks_and_protected_lands$(VERSION_PREFIXED).zip
-	rm geojson/ne_10m_parks_and_protected_lands_*.geojson
+	rm -f geojson/ne_10m_parks_and_protected_lands_*.geojson
 	ogr2ogr -overwrite -f GeoJSON -lco WINDOWS-1252 geojson/ne_10m_parks_and_protected_lands_area.geojson 10m_cultural/ne_10m_parks_and_protected_lands_area.shp
 	ogr2ogr -overwrite -f GeoJSON -lco WINDOWS-1252 geojson/ne_10m_parks_and_protected_lands_scale_rank.geojson 10m_cultural/ne_10m_parks_and_protected_lands_scale_rank.shp
 	ogr2ogr -overwrite -f GeoJSON -lco WINDOWS-1252 geojson/ne_10m_parks_and_protected_lands_line.geojson 10m_cultural/ne_10m_parks_and_protected_lands_line.shp
@@ -2082,4 +2082,4 @@ clean:
 	rm -rf zips/50m_physical/*
 	rm -rf zips/110m_cultural/*
 	rm -rf zips/110m_physical/*
-	#rm -rf zips/packages/*
\ No newline at end of file
+	#rm -rf zips/packages/*
diff --git a/UPDATE_PROCEDURE.md b/UPDATE_PROCEDURE.md
index b0147f94..a17babe1 100644
--- a/UPDATE_PROCEDURE.md
+++ b/UPDATE_PROCEDURE.md
@@ -2,8 +2,11 @@
 
 Scripts to build Natural Earth ZIP archives for individual themes, scalesets, and packagages.
 
-**Requirements**: `Make` a generic Unix utility, to be installed. 
+**Requirements**: 
 
+ - `Make` a generic Unix utility, to be installed. 
+ - `GDAL` to be installed and the folder containing ogr2ogr to be added to the PATH environment variable
+   
 Assumed to be run on Mac or Ubuntu Linux.
 
 #Usage
@@ -39,6 +42,12 @@ also be recorded, with better formatting, in a public blog post.
         make zips/packages/Natural_Earth_quick_start/Natural_Earth_quick_start.zip
         make clean
     
+    Note, that if this is a clean clone or checkout you should
+    start with the following, since 'clean' creates the required
+    empty directories:
+    
+        make clean all
+            
 6. Push those changes live to the distribution network!
 
         make live