diff --git a/ChangeLog b/ChangeLog
index 585467f69..1feb42c4c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2005-05-02  Mike Kestner  <mkestner@novell.com>
+
+	* generator/Property.cs : fix interface setter generation.
+	[Fixes #74766]
+
 2005-04-27  Ben Maurer  <bmaurer@ximian.com>
 	
 	* */Makefile.am: more build fixes
diff --git a/generator/Property.cs b/generator/Property.cs
index c2fbbbbff..89df3fe7d 100644
--- a/generator/Property.cs
+++ b/generator/Property.cs
@@ -183,7 +183,7 @@ namespace GtkSharp.Generation {
 					sw.WriteLine("new GLib.Value(value, \"{0}\");", c_type);
 				} else {
 					sw.Write("new GLib.Value(");
-					if (v_type != "" && !(table.IsObject (c_type) || table.IsOpaque (c_type))) {
+					if (v_type != "" && !(table.IsObject (c_type) || table.IsInterface (c_type) || table.IsOpaque (c_type))) {
 						sw.Write(v_type + " ");
 					}
 					sw.WriteLine("value);");