diff --git a/Lib/distutils/command/wininst-14.0-amd64.exe b/Lib/distutils/command/wininst-14.0-amd64.exe
index 22299543a97..253c2e2ecce 100644
Binary files a/Lib/distutils/command/wininst-14.0-amd64.exe and b/Lib/distutils/command/wininst-14.0-amd64.exe differ
diff --git a/Lib/distutils/command/wininst-14.0.exe b/Lib/distutils/command/wininst-14.0.exe
index 0dac1103d98..46f5f356676 100644
Binary files a/Lib/distutils/command/wininst-14.0.exe and b/Lib/distutils/command/wininst-14.0.exe differ
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index 60bee30af51..adbb7334f00 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -154,7 +154,7 @@ HANDLE hBitmap;
 char *bitmap_bytes;
 
 static const char *REGISTRY_SUFFIX_6432 =
-#ifdef MS_WIN64
+#ifdef _WIN64
                                           "";
 #else
                                           "-32";