diff --git a/ModFramework/Emitters/HookEmitter.cs b/ModFramework/Emitters/HookEmitter.cs
index cfd3dcf..fef7952 100644
--- a/ModFramework/Emitters/HookEmitter.cs
+++ b/ModFramework/Emitters/HookEmitter.cs
@@ -485,7 +485,10 @@ static MethodDefinition CreateReplacement(MethodDefinition original, MethodDefin
         );
 
         foreach (var param in original.Parameters)
-            methodDefinition.Parameters.Add(new ParameterDefinition(param.Name, param.Attributes, param.ParameterType));
+            methodDefinition.Parameters.Add(new ParameterDefinition(param.Name, param.Attributes, param.ParameterType)
+            {
+                Constant = param.Constant,
+            });
 
         var il = methodDefinition.Body.GetILProcessor();