diff --git a/api/gtk-api.xml b/api/gtk-api.xml
index c20e2a898..971c3aaaa 100644
--- a/api/gtk-api.xml
+++ b/api/gtk-api.xml
@@ -9477,8 +9477,8 @@
       <method name="GetSizeRequest" cname="gtk_widget_get_size_request">
         <return-type type="void"/>
         <parameters>
-          <parameter type="gint*" name="width"/>
-          <parameter type="gint*" name="height"/>
+          <parameter type="gint*" name="width" pass_as="out"/>
+          <parameter type="gint*" name="height" pass_as="out"/>
         </parameters>
       </method>
       <method name="GetStyle" cname="gtk_widget_get_style" needs_ref="1">
diff --git a/gtk/Widget.custom b/gtk/Widget.custom
index 4bc66f105..35139aa19 100644
--- a/gtk/Widget.custom
+++ b/gtk/Widget.custom
@@ -29,4 +29,19 @@ public Gdk.Window GdkWindow {
 		}
 		return null;
 	}
-}
\ No newline at end of file
+}
+
+public System.Drawing.Size RequestSize {
+	get {
+		int x, y;
+		GetSizeRequest (out x, out y);
+		
+		return new System.Drawing.Size (x, y);
+	}
+	set {
+		int x = value.Width;
+		int y = value.Height;
+		SetSizeRequest (x, y);
+	}
+}
+
diff --git a/gtk/Window.custom b/gtk/Window.custom
index 69cc2fb6a..77ab6712c 100755
--- a/gtk/Window.custom
+++ b/gtk/Window.custom
@@ -40,17 +40,6 @@
 			}
 		}
 
-		public System.Drawing.Size SizeRequest {
-			get {
-				return new System.Drawing.Size (
-						DefaultWidth, DefaultHeight);
-			}
-			set {
-				DefaultWidth = value.Width;
-				DefaultHeight = value.Height;
-			}
-		}
-
 		public System.Drawing.Size Position {
 			get {
 				int x, y;
diff --git a/sources/Gtk.metadata b/sources/Gtk.metadata
index ebbb9c8db..4084adc97 100644
--- a/sources/Gtk.metadata
+++ b/sources/Gtk.metadata
@@ -1881,6 +1881,18 @@ z<rule>
     </attribute>
   </data>
 </rule>
+<rule>
+  <class name="GtkWidget">
+    <method>GetSizeRequest</method>
+  </class>
+  <data>
+    <attribute target="param">
+      <filter level="type">gint*</filter>
+      <name>pass_as</name>
+      <value>out</value>
+    </attribute>
+  </data>
+</rule>
 <rule>
   <class name="GtkMenuItem">
     <method>SetSubmenu</method>