diff --git a/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/GtkUtil.cs b/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/GtkUtil.cs
index c1ca1847530..ac4e617129d 100644
--- a/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/GtkUtil.cs
+++ b/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/GtkUtil.cs
@@ -57,14 +57,14 @@ public static Gdk.Color ToGdkColor (this Cairo.Color color)
 		/// </param>
 		public static Gdk.Color AddLight (this Gdk.Color color, double lightAmount)
 		{
-			HslColor c = color;
+			Mono.TextEditor.HslColor c = color;
 			c.L += lightAmount;
 			return c;
 		}
 
 		public static Cairo.Color AddLight (this Cairo.Color color, double lightAmount)
 		{
-			HslColor c = color;
+			Mono.TextEditor.HslColor c = color;
 			c.L += lightAmount;
 			return c;
 		}