diff --git a/OPTWBIintegrationpatch/OPTWBIintegrationpatch-1.1.0.ckan b/OPTWBIintegrationpatch/OPTWBIintegrationpatch-1.1.0.ckan
index fa6da9b136..1515ced4c6 100644
--- a/OPTWBIintegrationpatch/OPTWBIintegrationpatch-1.1.0.ckan
+++ b/OPTWBIintegrationpatch/OPTWBIintegrationpatch-1.1.0.ckan
@@ -2,7 +2,7 @@
     "spec_version": "v1.4",
     "identifier": "OPTWBIintegrationpatch",
     "name": "OPT WBI integration patch",
-    "abstract": "Adapts OPT and OPT Legacy into Angel-125's mods and replaces Firespitter for tank switching.",
+    "abstract": "(( KSP 1.3.1 only )) Adapts OPT and OPT Legacy into Angel-125's mods and replaces Firespitter for tank switching.",
     "author": "JadeOfMaar",
     "license": "CC-BY-NC-SA-4.0",
     "resources": {