diff --git a/coderd/files/cache.go b/coderd/files/cache.go
index 56e9a715de189..dbf7069f9298c 100644
--- a/coderd/files/cache.go
+++ b/coderd/files/cache.go
@@ -57,7 +57,8 @@ type fetcher func(context.Context, uuid.UUID) (fs.FS, error)
 // calls for the same fileID will only result in one fetch, and that parallel
 // calls for distinct fileIDs will fetch in parallel.
 //
-// Every call to Acquire must have a matching call to Release.
+// Safety: Every call to Acquire that does not return an error must have a
+// matching call to Release.
 func (c *Cache) Acquire(ctx context.Context, fileID uuid.UUID) (fs.FS, error) {
 	// It's important that this `Load` call occurs outside of `prepare`, after the
 	// mutex has been released, or we would continue to hold the lock until the