diff --git a/Content.Server/Interfaces/IGasMixtureHolder.cs b/Content.Server/Interfaces/IGasMixtureHolder.cs
index 12f42a214f..ad7d035f88 100644
--- a/Content.Server/Interfaces/IGasMixtureHolder.cs
+++ b/Content.Server/Interfaces/IGasMixtureHolder.cs
@@ -5,7 +5,5 @@ namespace Content.Server.Interfaces
     public interface IGasMixtureHolder
     {
         public GasMixture Air { get; set; }
-
-        bool AssumeAir(GasMixture giver);
     }
 }