diff --git a/Source/Bind/Specifications/GL2/enum.spec b/Source/Bind/Specifications/GL2/enum.spec
index 40e21091..73f6fa93 100644
--- a/Source/Bind/Specifications/GL2/enum.spec
+++ b/Source/Bind/Specifications/GL2/enum.spec
@@ -173,10 +173,15 @@ Extensions define:
 
 ###############################################################################
 #
-# Edited by Stefanos Apostolopoulos for OpenTK. Revision 2
+# Edited by Stefanos Apostolopoulos for OpenTK. Revision 3
 #
 ###############################################################################
 
+StencilFace enum:
+	use DrawBufferMode FRONT
+	use DrawBufferMode BACK
+	use DrawBufferMode FRONT_AND_BACK
+
 DrawElementsType enum:
 	use DataType UNSIGNED_BYTE
 	use DataType UNSIGNED_SHORT
diff --git a/Source/Bind/Specifications/GL2/gl.spec b/Source/Bind/Specifications/GL2/gl.spec
index 981eb5a5..e2eb0332 100644
--- a/Source/Bind/Specifications/GL2/gl.spec
+++ b/Source/Bind/Specifications/GL2/gl.spec
@@ -5868,12 +5868,14 @@ StencilOpSeparate(face, sfail, dpfail, dppass)
 	glsopcode	?
 	offset		?
 
-StencilFuncSeparate(frontfunc, backfunc, ref, mask)
+
+# Edited for OpenTK
+StencilFuncSeparate(face, func, ref, mask)
 	return		void
-	param		frontfunc	StencilFunction in value
-	param		backfunc	StencilFunction in value
+	param		face	StencilFace in value
+	param		func	StencilFunction in value
 	param		ref		ClampedStencilValue in value
-	param		mask		MaskedStencilValue in value
+	param		mask	MaskedStencilValue in value
 	category	VERSION_2_0
 	version		2.0
 	extension