diff --git a/scripts/create_dmg.sh b/scripts/create_dmg.sh
index 52579d777..2e71c5bf3 100644
--- a/scripts/create_dmg.sh
+++ b/scripts/create_dmg.sh
@@ -4,6 +4,11 @@ dir="`pwd`"
 version=$(cat ../config.h | grep VERSION | sed -e 's/.*\"\(.*\)\"/\1/g')
 distdir=ASEPRITE_$version
 
+if [ ! -f create_dmg.sh ]; then
+    echo You must run create_dmg.sh from scripts/ directory
+    exit 1
+fi
+
 if [ ! -f $distdir.dmg ] ; then
     cd "$dir/.."
     mkdir "$dir/$distdir"
diff --git a/scripts/upload_packages.sh b/scripts/upload_packages.sh
index 1a176f115..241f4ef8f 100644
--- a/scripts/upload_packages.sh
+++ b/scripts/upload_packages.sh
@@ -1,5 +1,10 @@
 #! /bin/sh
 
+if [ ! -f update_packages.sh ]; then
+    echo You must run update_packages.sh from scripts/ directory
+    exit 1
+fi
+
 version=$(cat ../config.h | grep VERSION | sed -e 's/.*\"\(.*\)\"/\1/g')
 python=c:/Python27/python.exe