diff --git a/win32/makedist/makedist.midori b/win32/makedist/makedist.midori
index fed5d836..b922c518 100755
--- a/win32/makedist/makedist.midori
+++ b/win32/makedist/makedist.midori
@@ -23,6 +23,11 @@
 # a bit of configuration
 root_dir=$MINGW_PREFIX
 
+if [ "$MINGW_PREFIX" == "" ]; then
+   echo "Warning!. MING_PREFIX variable is empty!"
+   sleep 5s
+fi
+
 # create temporary working directory
 temp_dir=`mktemp -d`