diff --git a/src/output.c b/src/output.c
index 70b7ef5..81f29fa 100644
--- a/src/output.c
+++ b/src/output.c
@@ -126,6 +126,7 @@ RJP_value* rjp_set_object(RJP_value* v){
 	if(v->type == rjp_json_object)
 		return v;
 	irjp_delete_value(v);
+	memset(&v->object, 0, sizeof(RJP_object));
 	v->type = rjp_json_object;
 	return v;
 }
@@ -133,6 +134,7 @@ RJP_value* rjp_set_array(RJP_value* v){
 	if(v->type == rjp_json_array)
 		return v;
 	irjp_delete_value(v);
+	memset(&v->object, 0, sizeof(RJP_array));
 	v->type = rjp_json_array;
 	return v;
 }