diff --git a/taskcluster/taskgraph/task/legacy.py b/taskcluster/taskgraph/task/legacy.py
index f526e0f2f8cd..97e421b618ca 100644
--- a/taskcluster/taskgraph/task/legacy.py
+++ b/taskcluster/taskgraph/task/legacy.py
@@ -151,7 +151,7 @@ def remove_caches_from_task(task):
     """
     whitelist = [
         re.compile("^level-[123]-.*-tc-vcs(-public-sources)?$"),
-        re.compile("^level-[123]-hg-shared"),
+        re.compile("^level-[123]-hg-shared$"),
         re.compile("^tooltool-cache$"),
     ]
     try: