diff --git a/include/PICA/regs.hpp b/include/PICA/regs.hpp
index 9ece8c3f..529fa391 100644
--- a/include/PICA/regs.hpp
+++ b/include/PICA/regs.hpp
@@ -13,6 +13,9 @@ namespace PICAInternalRegs {
 		ShaderOutputCount = 0x4F,
 
 		// Framebuffer registers
+		ColourOperation = 0x100,
+		BlendFunc = 0x101,
+		BlendColour = 0x103,
 		AlphaTestConfig = 0x104,
 		DepthAndColorMask = 0x107,
 		ColourBufferFormat = 0x117,