diff --git a/libretroshare/src/util/rsstring.cc b/libretroshare/src/util/rsstring.cc
index 415474d2e..1f7eec6de 100644
--- a/libretroshare/src/util/rsstring.cc
+++ b/libretroshare/src/util/rsstring.cc
@@ -27,6 +27,7 @@
 #include <vector>
 #include <stdarg.h>
 #include <stdlib.h>
+#include <stdint.h>
 #endif
 #include <stdio.h>