diff --git a/lib/gtls.c b/lib/gtls.c
index 4a3232cc74143d2e68730bce1e142ce6cac6a3d1..1e054d16f60273e1282df3193c8eb891eacaa1f6 100644
--- a/lib/gtls.c
+++ b/lib/gtls.c
@@ -49,6 +49,8 @@
 #include "parsedate.h"
 #include "connect.h" /* for the connect timeout */
 #include "select.h"
+#include "rawstr.h"
+
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
 #include "memory.h"