diff --git a/scripts/unpack b/scripts/unpack
index 9d16daeac4..a1fae1e211 100755
--- a/scripts/unpack
+++ b/scripts/unpack
@@ -40,11 +40,12 @@ STAMP_DEPENDS="$PKG_DIR $PKG_NEED_UNPACK $PROJECT_DIR/$PROJECT/patches/$PKG_NAME
 [ -n "$DEVICE" ] && STAMP_DEPENDS="$STAMP_DEPENDS $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME"
 
 # Perform a wildcard match on the package to ensure old versions are cleaned too
+PKG_DEEPMD5=
 for i in $BUILD/$1-*; do
   if [ -d $i -a -f "$i/.libreelec-unpack" ] ; then
     . "$i/.libreelec-unpack"
     if [ "$STAMP_PKG_NAME" = "$1" ]; then
-      PKG_DEEPMD5=$(find $STAMP_DEPENDS -exec md5sum {} \; 2>/dev/null | sort | md5sum | cut -d" " -f1)
+      [ -z "${PKG_DEEPMD5}" ] && PKG_DEEPMD5=$(find $STAMP_DEPENDS -exec md5sum {} \; 2>/dev/null | sort | md5sum | cut -d" " -f1)
       if [ ! "$PKG_DEEPMD5" = "$STAMP_PKG_DEEPMD5" ] ; then
         $SCRIPTS/clean $1
       fi