1 files changed, 1 insertions, 1 deletions
diff --git a/src/vim.h b/src/vim.h
index 0297cfd68..52eebab25 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1730,7 +1730,7 @@ typedef struct timeval proftime_T;
 typedef int proftime_T;	    /* dummy for function prototypes */
 #endif
 
-#ifdef WIN64
+#ifdef _WIN64
 typedef __int64 sock_T;
 #else
 typedef int sock_T;