diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 7a6dbc84c52..23b7036522e 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -21,6 +21,9 @@ redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
 
 #ifdef __sgi
 /* This is missing from unistd.h */