diff --git a/src/apps.json b/src/apps.json
index 2c6a105a4..60b341e42 100755
--- a/src/apps.json
+++ b/src/apps.json
@@ -2729,7 +2729,7 @@
 				12
 			],
 			"env": "^Immutable$",
-			"script": "^immutable\.(min\.)?js$",
+			"script": "^immutable\\.(min\\.)?js$",
 			"website": "facebook.github.io/immutable-js/"
 		},
 		"ImpressCMS": {