diff --git a/scripts/image b/scripts/image
index 6d9152f183..03747fec92 100755
--- a/scripts/image
+++ b/scripts/image
@@ -192,7 +192,7 @@ IMAGE_NAME="$DISTRONAME-$TARGET_VERSION"
   chmod 0644 $TARGET_IMG/$IMAGE_NAME.system
   chmod 0644 $TARGET_IMG/$IMAGE_NAME.kernel
 
-  if [ $1 = "release" ]; then
+  if [ "$1" = "release" ]; then
 
     RELEASE_DIR="target/$IMAGE_NAME"