diff --git a/include/cstd.h b/include/cstd.h
index 3e4764b52..54c950a40 100644
--- a/include/cstd.h
+++ b/include/cstd.h
@@ -59,6 +59,7 @@
 #include <stdarg.h>
 #include <ctype.h>
 #include <time.h>
+#include <limits.h>
 
 #else /* !__cplusplus */
 /* for FILE */