diff --git a/src/logic/slbt_exec_link.c b/src/logic/slbt_exec_link.c
index 2c9e5aa..bc394a6 100644
--- a/src/logic/slbt_exec_link.c
+++ b/src/logic/slbt_exec_link.c
@@ -192,6 +192,7 @@ static int slbt_exec_link_create_symlink(
 	ln[1] = "-s";
 	ln[2] = atarget;
 	ln[3] = lnkname;
+	ln[4] = 0;
 	ectx->argv = ln;
 
 	/* step output */