diff --git a/src/core/config/Categories.json b/src/core/config/Categories.json
index a93149fe..4d4f9f0e 100755
--- a/src/core/config/Categories.json
+++ b/src/core/config/Categories.json
@@ -375,6 +375,7 @@
         "ops": [
             "Magic",
             "Fork",
+			"Disjoin",
             "Merge",
             "Register",
             "Label",