diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp
index 039943a..0eb7fcc 100644
--- a/lib/MC/MCExpr.cpp
+++ b/lib/MC/MCExpr.cpp
@@ -222,6 +222,8 @@
   case VK_Mips_GOT_DISP: return "GOT_DISP";
   case VK_Mips_GOT_PAGE: return "GOT_PAGE";
   case VK_Mips_GOT_OFST: return "GOT_OFST";
+  case VK_Mips_HIGHER:   return "HIGHER";
+  case VK_Mips_HIGHEST:  return "HIGHEST";
   }
   llvm_unreachable("Invalid variant kind");
 }