diff --git a/Content.Client/Atmos/UI/GasMixerBoundUserInteface.cs b/Content.Client/Atmos/UI/GasMixerBoundUserInteface.cs
index 2cd140ef55..aca4835bf2 100644
--- a/Content.Client/Atmos/UI/GasMixerBoundUserInteface.cs
+++ b/Content.Client/Atmos/UI/GasMixerBoundUserInteface.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using Content.Client.Atmos.EntitySystems;
 using Content.Shared.Atmos;
 using Content.Shared.Atmos.Piping.Binary.Components;
@@ -57,10 +57,12 @@ namespace Content.Client.Atmos.UI
 
         private void OnMixerSetPercentagePressed(string value)
         {
-            // We don't need to send both nodes because it's just 1.0f - node
+            // We don't need to send both nodes because it's just 100.0f - node
             float node = float.TryParse(value, out var parsed) ? parsed : 1.0f;
 
-            if(_window is not null) node = _window.NodeOneLastEdited ? node : 1.0f - node;
+            node = Math.Clamp(node, 0, 100);
+
+            if (_window is not null) node = _window.NodeOneLastEdited ? node : 100.0f - node;
 
             SendMessage(new GasMixerChangeNodePercentageMessage(node));
         }