diff --git a/src/option.c b/src/option.c
index 570c5c8..cfe464c 100644
--- a/src/option.c
+++ b/src/option.c
@@ -8847,7 +8847,7 @@
     void	*from;
 {
     int		opt_idx;
-    char_u	*varp;
+    char_u	*varp = NULL;
     struct vimoption *p;
     int		r = 0;