diff --git a/core/src/io/anuke/mindustry/io/JsonIO.java b/core/src/io/anuke/mindustry/io/JsonIO.java
index 889ab0e9c5..bb3a642a66 100644
--- a/core/src/io/anuke/mindustry/io/JsonIO.java
+++ b/core/src/io/anuke/mindustry/io/JsonIO.java
@@ -7,7 +7,7 @@ import io.anuke.mindustry.game.Rules;
 import io.anuke.mindustry.game.SpawnGroup;
 import io.anuke.mindustry.type.*;
 
-@SuppressWarnings("unused")
+@SuppressWarnings("unchecked")
 public class JsonIO{
     private static Json json = new Json(){{
         setIgnoreUnknownFields(true);