diff --git a/modules/beast_core/text/beast_String.cpp b/modules/beast_core/text/beast_String.cpp
index b84daf33e..ac3c46a56 100644
--- a/modules/beast_core/text/beast_String.cpp
+++ b/modules/beast_core/text/beast_String.cpp
@@ -401,7 +401,7 @@ namespace NumberToStringConverters
         }
         return printDigits (t, n);
     }
-#ifndef _MSC_VER
+#ifdef _MSC_VER
 #pragma warning (pop)
 #endif