diff --git a/Lib/distutils/command/wininst-14.0-amd64.exe b/Lib/distutils/command/wininst-14.0-amd64.exe
index 2229954..253c2e2 100644
--- a/Lib/distutils/command/wininst-14.0-amd64.exe
+++ b/Lib/distutils/command/wininst-14.0-amd64.exe
Binary files differ
diff --git a/Lib/distutils/command/wininst-14.0.exe b/Lib/distutils/command/wininst-14.0.exe
index 0dac110..46f5f35 100644
--- a/Lib/distutils/command/wininst-14.0.exe
+++ b/Lib/distutils/command/wininst-14.0.exe
Binary files differ
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index fd977f5..17cc30d 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -154,7 +154,7 @@
 char *bitmap_bytes;
 
 static const char *REGISTRY_SUFFIX_6432 =
-#ifdef MS_WIN64
+#ifdef _WIN64
                                           "";
 #else
                                           "-32";