diff --git a/axl.h b/axl.h
index bd26d55..07e842c 100644
--- a/axl.h
+++ b/axl.h
@@ -3,5 +3,6 @@
 
 #include "axl_types.h"
 #include "axl_memory.h"
+#include "axl_string.h"
 
 #endif