diff --git a/runtime/syntax/crontab.yaml b/runtime/syntax/crontab.yaml
index 86566512a7..2b63045334 100644
--- a/runtime/syntax/crontab.yaml
+++ b/runtime/syntax/crontab.yaml
@@ -1,7 +1,7 @@
 filetype: crontab
 
 detect:
-    filename: "crontab$"
+    filename: "crontab$|/tmp/crontab\\.\\w+$"
     header: "^#.*?/etc/crontab"
 
 rules: