diff --git a/src/vars.c b/src/vars.c
index cf92005..980b669 100644
--- a/src/vars.c
+++ b/src/vars.c
@@ -873,7 +873,7 @@
 static int vars_parse_cli_get_var(char **args, char *payload, struct appctx *appctx, void *private)
 {
 	struct vars *vars;
-	struct sample smp;
+	struct sample smp = { };
 	int i;
 
 	if (!cli_has_level(appctx, ACCESS_LVL_OPER))