diff --git a/beast/module/core/text/LexicalCast.h b/beast/module/core/text/LexicalCast.h
index 59b481eb90..52b122001a 100644
--- a/beast/module/core/text/LexicalCast.h
+++ b/beast/module/core/text/LexicalCast.h
@@ -28,7 +28,7 @@
 #include <limits>
 #include <string>
 #include <utility>
-
+#include <typeinfo>
 #include <iostream>
 
 namespace beast {