diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/tpslimit/TPSLimitCommand.java b/BauSystem_Main/src/de/steamwar/bausystem/features/tpslimit/TPSLimitCommand.java
index 7a56e37f..c7316bd1 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/tpslimit/TPSLimitCommand.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/tpslimit/TPSLimitCommand.java
@@ -30,8 +30,11 @@ import de.steamwar.command.SWCommandUtils;
 import de.steamwar.command.TypeMapper;
 import net.md_5.bungee.api.ChatMessageType;
 import net.md_5.bungee.api.chat.TextComponent;
+import net.minecraft.server.v1_15_R1.WorldServer;
 import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_15_R1.CraftWorld;
 import org.bukkit.entity.Player;
+import yapion.utils.ReflectionsUtils;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -86,10 +89,11 @@ public class TPSLimitCommand extends SWCommand implements Enable {
     @ClassMapper(value = double.class, local = true)
     public TypeMapper<Double> doubleTypeMapper() {
         return SWCommandUtils.createMapper(s -> {
+            if (s.equalsIgnoreCase("nan")) return -1D;
             try {
                 return Double.parseDouble(s.replace(',', '.'));
             } catch (NumberFormatException e) {
-                return 0D;
+                return -1D;
             }
         }, s -> tabCompletions);
     }