diff --git a/data/scripts/create_apple_dmg.sh.in b/data/scripts/create_apple_dmg.sh.in
index 0116f1f69..eb77b75bb 100644
--- a/data/scripts/create_apple_dmg.sh.in
+++ b/data/scripts/create_apple_dmg.sh.in
@@ -11,9 +11,9 @@ fi
 
 # set up your app name, version number, and background image file name
 APP_NAME="@MACOSX_BUNDLE_BUNDLE_NAME@"
-VERSION="@MACOSX_BUNDLE_LONG_VERSION@"
+VERSION="@MACOSX_BUNDLE_LONG_VERSION_STRING@"
 DMG_BACKGROUND_IMG="dmg_branding.png"
-cp "@CMAKE_INSTALL_PREFIX@/data/$DMG_BACKGROUND_IMG" .
+cp "@CMAKE_SOURCE_DIR@/data/${DMG_BACKGROUND_IMG}" .
 
 # you should not need to change these
 APP_LOWERCASE=$(echo $APP_NAME|tr '[:upper:]' '[:lower:]')