diff --git a/lib/aslint/base_checkers.py b/lib/aslint/base_checkers.py
index 881589a15aaf356c50b12a5e2b71b74bc31b3d75..1bc97256c981d6b835791627fe39234abef41f55 100644
--- a/lib/aslint/base_checkers.py
+++ b/lib/aslint/base_checkers.py
@@ -428,7 +428,7 @@ def search_msg(expr, ignore_case=True):
     flag = re.M
     if ignore_case:
         flag |= re.I
-    return re.compile(expr, re.M | re.I).finditer
+    return re.compile(expr, flag).finditer
 
 # categories of checkers to filter checklist