diff --git a/src/ex_getln.c b/src/ex_getln.c
index a4f0a26..4978cee 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -4672,7 +4672,7 @@
 	    {
 		char_u	*xp_name;
 		int	xp_namelen;
-		long	argt;
+		long	argt = 0;
 
 		// input() with a third argument: completion
 		rettv->vval.v_string = NULL;