diff --git a/check_source/check_style_c.py b/check_source/check_style_c.py
index eb1c0bb932d1a5f210e8cf388fab4234edbc559f..74fbce8c1d6af66597d12b6047fcd3b9af858cd4 100755
--- a/check_source/check_style_c.py
+++ b/check_source/check_style_c.py
@@ -825,7 +825,7 @@ def quick_check_indentation(lines):
 
                 skip = True
             if ls[0:2] == "//":
-                skip = true
+                skip = True
             # label:
             elif (':' in ls and l[0] != '\t'):
                 skip = True