diff --git a/src/vim.h b/src/vim.h
index c91e52b..d7bf26f 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -2512,7 +2512,7 @@
 #else
 # if defined(WIN32)
 #  define ELAPSED_TICKCOUNT
-#  define ELAPSED_INIT(v) v = GetTickCount
+#  define ELAPSED_INIT(v) v = GetTickCount()
 #  define ELAPSED_FUNC(v) elapsed(v)
 #  define ELAPSED_TYPE DWORD
     long elapsed(DWORD start_tick);