diff --git a/Source/Bind/Specifications/GL2/enum.spec b/Source/Bind/Specifications/GL2/enum.spec
index 73f6fa93..1d7203af 100644
--- a/Source/Bind/Specifications/GL2/enum.spec
+++ b/Source/Bind/Specifications/GL2/enum.spec
@@ -290,15 +290,18 @@ AlphaFunction enum:
 
 ###############################################################################
 
+# Edited for OpenTK
 BlendingFactorDest enum:
 	ZERO						= 0
-	ONE						= 1
+	ONE							= 1
 	SRC_COLOR					= 0x0300
-	ONE_MINUS_SRC_COLOR				= 0x0301
+	ONE_MINUS_SRC_COLOR			= 0x0301
+	DST_COLOR					= 0x0306
+	ONE_MINUS_DST_COLOR			= 0x0307
 	SRC_ALPHA					= 0x0302
-	ONE_MINUS_SRC_ALPHA				= 0x0303
+	ONE_MINUS_SRC_ALPHA			= 0x0303
 	DST_ALPHA					= 0x0304
-	ONE_MINUS_DST_ALPHA				= 0x0305
+	ONE_MINUS_DST_ALPHA			= 0x0305
 	use EXT_blend_color CONSTANT_COLOR_EXT
 	use EXT_blend_color ONE_MINUS_CONSTANT_COLOR_EXT
 	use EXT_blend_color CONSTANT_ALPHA_EXT
@@ -306,16 +309,19 @@ BlendingFactorDest enum:
 
 ###############################################################################
 
+# Edited for OpenTK
 BlendingFactorSrc enum:
 	use BlendingFactorDest ZERO
 	use BlendingFactorDest ONE
-	DST_COLOR					= 0x0306
-	ONE_MINUS_DST_COLOR				= 0x0307
-	SRC_ALPHA_SATURATE				= 0x0308
+	use BlendingFactorDest SRC_COLOR
+	use BlendingFactorDest ONE_MINUS_SRC_COLOR
+	use BlendingFactorDest DST_COLOR
+	use BlendingFactorDest ONE_MINUS_DST_COLOR
 	use BlendingFactorDest SRC_ALPHA
 	use BlendingFactorDest ONE_MINUS_SRC_ALPHA
 	use BlendingFactorDest DST_ALPHA
 	use BlendingFactorDest ONE_MINUS_DST_ALPHA
+	SRC_ALPHA_SATURATE				= 0x0308
 	use EXT_blend_color CONSTANT_COLOR_EXT
 	use EXT_blend_color ONE_MINUS_CONSTANT_COLOR_EXT
 	use EXT_blend_color CONSTANT_ALPHA_EXT