diff --git a/OneWindow/OneWindow-4.0.ckan b/OneWindow/OneWindow-4.0.ckan
index 26e3970fbe..75cc742da2 100644
--- a/OneWindow/OneWindow-4.0.ckan
+++ b/OneWindow/OneWindow-4.0.ckan
@@ -5,7 +5,8 @@
     "abstract": "A simple addon to display, store, and organize onscreen messages",
     "author": "DMagic",
     "version": "4.0",
-    "ksp_version": "1.8.1",
+    "ksp_version_min": "1.8.0",
+    "ksp_version_max": "1.8.8",
     "license": "MIT",
     "resources": {
         "homepage": "http://forum.kerbalspaceprogram.com/index.php?/topic/108704-1",