diff --git a/commands.go b/commands.go
index 4f0aea8..ebb4239 100644
--- a/commands.go
+++ b/commands.go
@@ -950,8 +950,8 @@ func (c *Client) ClientList() *StringReq {
 	return req
 }
 
-func (c *Client) ConfigGet(parameter string) *StringSliceReq {
-	req := NewStringSliceReq("CONFIG", "GET", parameter)
+func (c *Client) ConfigGet(parameter string) *IfaceSliceReq {
+	req := NewIfaceSliceReq("CONFIG", "GET", parameter)
 	c.Process(req)
 	return req
 }
diff --git a/redis_test.go b/redis_test.go
index f277fb0..e089422 100644
--- a/redis_test.go
+++ b/redis_test.go
@@ -2544,7 +2544,7 @@ func (t *RedisTest) TestCmdConfigSet(c *C) {
 	c.Assert(configGet.Val(), HasLen, 2)
 	c.Assert(configGet.Val()[0], Equals, "maxmemory")
 
-	configSet := t.client.ConfigSet("maxmemory", configGet.Val()[1])
+	configSet := t.client.ConfigSet("maxmemory", configGet.Val()[1].(string))
 	c.Assert(configSet.Err(), IsNil)
 	c.Assert(configSet.Val(), Equals, "OK")
 }