1 files changed, 2 insertions, 0 deletions
diff --git a/src/std/str.h b/src/std/str.h
index 9d30cba..518d508 100644
--- a/src/std/str.h
+++ b/src/std/str.h
@@ -10,6 +10,8 @@
  */
 #pragma once
 
+#include <ctype.h>
+
 #include "defines.h"
 #include "mem.h"