diff --git a/src/version.h b/src/version.h
index c36597cc..7288bab8 100644
--- a/src/version.h
+++ b/src/version.h
@@ -67,6 +67,8 @@
 #       define MSVC_VERSION 0
 #   endif
 #include <string>
+#else
+#include <string.h>
 #endif