diff --git a/entrypoint.sh b/entrypoint.sh
index 1e74090..97f172a 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -36,7 +36,7 @@ if [[ "${PLUGIN_PLATFORM:-}" == "true" ]]; then
 fi
 # https://github.com/moby/buildkit/blob/master/README.md#output
 OUTPUT=""
-if [[ "${PLUGIN_NAME:-}" == "true" ]]; then
+if [[ -n "${PLUGIN_NAME:-}" ]]; then
 	OUTPUT="$OUTPUT --output type=image,\"name=$PLUGIN_NAME\",push=${PLUGIN_PUSH:-true},oci-mediatypes=true,oci-artifact=true,compression=estargz"
 	OUTPUT="$OUTPUT,oci-mediatypes=true,oci-artifact=true,compression=estargz,compression-level=9"
 	OUTPUT="$OUTPUT,rewrite-timestamp=true"