diff --git a/src/libqof/qof/qoflog.c b/src/libqof/qof/qoflog.c
index 4e84e47993c..642d0b2f817 100644
--- a/src/libqof/qof/qoflog.c
+++ b/src/libqof/qof/qoflog.c
@@ -117,7 +117,7 @@ log4glib_handler(const gchar     *log_domain,
         time_t now;
         struct tm now_tm;
         const char *format_24hour =
-#ifdef _MSC_VER
+#ifdef G_OS_WIN32
             "%H:%M:%S"
 #else
             "%T"