diff --git a/generator/Parameter.cs b/generator/Parameter.cs
index 7c6016b50..a77db28fc 100644
--- a/generator/Parameter.cs
+++ b/generator/Parameter.cs
@@ -408,9 +408,12 @@ namespace GtkSharp.Generation {
 
 		public override string[] Finish {
 			get {
-				string[] result = new string [2];
-				result [0] = CallName + " = " + FromNative ("native_" + CallName) + ";";
-				result [1] = (Generatable as IManualMarshaler).ReleaseNative ("native_" + CallName) + ";";
+				string[] result = new string [PassAs == string.Empty ? 1 : 2];
+				int i = 0;
+				if (PassAs != string.Empty) {
+					result [i++] = CallName + " = " + FromNative ("native_" + CallName) + ";";
+				}
+				result [i++] = (Generatable as IManualMarshaler).ReleaseNative ("native_" + CallName) + ";";
 				return result;
 			}
 		}