diff --git a/Content.Server/Atmos/Commands/AddAtmosCommand.cs b/Content.Server/Atmos/Commands/AddAtmosCommand.cs
index 6de7f53da8..3a86e58d13 100644
--- a/Content.Server/Atmos/Commands/AddAtmosCommand.cs
+++ b/Content.Server/Atmos/Commands/AddAtmosCommand.cs
@@ -24,7 +24,7 @@ namespace Content.Server.Atmos.Commands
 
             var entMan = IoCManager.Resolve<IEntityManager>();
 
-            if(EntityUid.TryParse(args[0], out var euid))
+            if (!EntityUid.TryParse(args[0], out var euid))
             {
                 shell.WriteError($"Failed to parse euid '{args[0]}'.");
                 return;