diff --git a/llvm/lib/Support/Windows/PathV2.inc b/llvm/lib/Support/Windows/PathV2.inc
index 5b2e288f816a..da5e8b60bd00 100644
--- a/llvm/lib/Support/Windows/PathV2.inc
+++ b/llvm/lib/Support/Windows/PathV2.inc
@@ -24,9 +24,9 @@
 #include <sys/types.h>
 
 // MinGW doesn't define this.
-#ifndef _ERRNO_T_DEFINED
-#define _ERRNO_T_DEFINED
-typedef int errno_t;
+#ifndef _ERRNO_T_DEFINED
+#define _ERRNO_T_DEFINED
+typedef int errno_t;
 #endif
 
 using namespace llvm;