diff --git a/flawfinder b/flawfinder
index 26ad8e0..6272519 100755
--- a/flawfinder
+++ b/flawfinder
@@ -156,7 +156,7 @@ def is_svn_diff(sLine):
   return False
 
 def is_gnu_diff(sLine):
-  if (sLine.find('--- ') == 0):
+  if sLine.startswith('--- '):
     return True
   return False