diff --git a/Modules/cmathmodule.c b/Modules/cmathmodule.c
index 94d6ce8d326..7e9de1fd5b4 100644
--- a/Modules/cmathmodule.c
+++ b/Modules/cmathmodule.c
@@ -4,8 +4,6 @@
 
 #include "Python.h"
 
-#include <errno.h>
-
 #include "mymath.h"
 
 #ifdef i860