Index: lldb/source/Host/windows/Windows.cpp
===================================================================
--- lldb/source/Host/windows/Windows.cpp
+++ lldb/source/Host/windows/Windows.cpp
@@ -48,7 +48,7 @@
   size_t buflen;
   va_list ap2;
 
-#if defined(_MSC_VER) || defined(__MINGW64)
+#if defined(_MSC_VER) || defined(__MINGW32__)
   ap2 = ap;
   len = _vscprintf(fmt, ap2);
 #else