diff --git a/include/wincodec.idl b/include/wincodec.idl
index 406fe6b4113..962a6fd6883 100644
--- a/include/wincodec.idl
+++ b/include/wincodec.idl
@@ -213,7 +213,7 @@ cpp_quote("DEFINE_GUID(GUID_WICPixelFormat48bppRGB, 0x6fddc324,0x4e03,0x4bfe,0xb
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat64bppRGBA, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x16);")
 cpp_quote("DEFINE_GUID(GUID_WICPixelFormat64bppPRGBA, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x17);")
 
-cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppCMYK, 0x6fddc324,0x4e03,0x4fbe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x1c);")
+cpp_quote("DEFINE_GUID(GUID_WICPixelFormat32bppCMYK, 0x6fddc324,0x4e03,0x4bfe,0xb1,0x85,0x3d,0x77,0x76,0x8d,0xc9,0x1c);")
 
 typedef struct WICRect {
     INT X;