diff --git a/src/main/resources/mousetweaks.mixins.json b/src/main/resources/mousetweaks.mixins.json
index 1206a83..df9cd94 100644
--- a/src/main/resources/mousetweaks.mixins.json
+++ b/src/main/resources/mousetweaks.mixins.json
@@ -2,13 +2,12 @@
   "required": true,
   "minVersion": "0.8",
   "package": "yalter.mousetweaks.mixin",
-  "compatibilityLevel": "JAVA_21",
+  "compatibilityLevel": "JAVA_17",
   "mixins": [],
   "client": [
     "AbstractContainerScreenAccessor"
   ],
   "injectors": {
     "defaultRequire": 1
-  },
-  "refmap": "mousetweaks.mixins.refmap.json"
+  }
 }