diff --git a/.githooks/post-checkout b/.githooks/post-checkout
index 5ee5dca..3334c35 100755
--- a/.githooks/post-checkout
+++ b/.githooks/post-checkout
@@ -34,6 +34,9 @@ if [ -f $CHECKOUT_HISTORY_FILE ]; then
                 if grep -qE '^[[:space:]]+$' <<< "${opkg_c}"; then
                     continue
                 fi
+                if [ ${#opkg_c} -eq 0 ]; then
+                    continue
+                fi
                 echo "DDD=${opkg_c}DDD"
                 # check if line is not starting with '#'
                 if ! grep -qE "^\s*[#]+.*$" <<< "$opkg_c"; then