diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
index 1d1ef0926b24..961c94f9c9e3 100644
--- a/llvm/include/llvm/BinaryFormat/ELF.h
+++ b/llvm/include/llvm/BinaryFormat/ELF.h
@@ -511,7 +511,7 @@ enum {
 #include "ELFRelocs/MOS.def"
 };
 
-// https://github.com/johnwbyrd/llvm-mos/wiki/ELF-format-for-MOS-compatible-processors
+// https://llvm-mos.org/wiki/ELF_specification
 enum : unsigned {
   EF_MOS_ARCH_6502 = 0x00000001, // Core NMOS 6502 instruction set, no BCD
   EF_MOS_ARCH_6502_BCD = 0x00000002, // BCD support, including CLD and SED