diff --git a/Release/include/cpprest/details/SafeInt3.hpp b/Release/include/cpprest/details/SafeInt3.hpp
index 950ac8017..e6276f949 100644
--- a/Release/include/cpprest/details/SafeInt3.hpp
+++ b/Release/include/cpprest/details/SafeInt3.hpp
@@ -1574,7 +1574,7 @@ public:
     }
 
     template<typename E>
-    static void CastThrow(bool b, T& t) SAFEINT_CPP_THROW
+    static void CastThrow(T t, bool& b) SAFEINT_CPP_THROW
     {
         b = !!t;
     }