diff --git a/src/platform/waiter.h b/src/platform/waiter.h
index d36d73d..1a19fba 100644
--- a/src/platform/waiter.h
+++ b/src/platform/waiter.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string>
+
 #if defined(WIN64) || defined(_WIN64) || defined(__WIN64__) || \
     defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__) || \
     defined(WINCE) || defined(_WIN32_WCE)