diff --git a/tools/warn/cpp_warn_patterns.py b/tools/warn/cpp_warn_patterns.py
index 8ae0a3c..ce10693 100644
--- a/tools/warn/cpp_warn_patterns.py
+++ b/tools/warn/cpp_warn_patterns.py
@@ -426,6 +426,9 @@
     {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnon-literal-null-conversion',
      'description': 'Zero used as null pointer',
      'patterns': [r".*: warning: expression .* zero treated as a null pointer constant"]},
+    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-compare',
+     'description': 'Compare pointer to null character',
+     'patterns': [r".*: warning: comparing a pointer to a null character constant"]},
     {'category': 'C/C++', 'severity': Severity.MEDIUM,
      'description': 'Implicit conversion changes value or loses precision',
      'patterns': [r".*: warning: implicit conversion .* changes value from .* to .*-conversion",