diff --git a/Tools/c-analyzer/cpython/_parser.py b/Tools/c-analyzer/cpython/_parser.py
index d7248c34c59be45..5da2ddeedd0b624 100644
--- a/Tools/c-analyzer/cpython/_parser.py
+++ b/Tools/c-analyzer/cpython/_parser.py
@@ -49,6 +49,7 @@ def format_tsv_lines(lines):
 EXCLUDED = format_conf_lines([
     # macOS
     'Modules/_scproxy.c',              # SystemConfiguration/SystemConfiguration.h
+    'Modules/_multiprocessing/semaphore_macosx.h',  # sys/sysctl.h
 
     # Windows
     'Modules/_winapi.c',               # windows.h