diff --git a/utils/TableGen/RegisterInfoEmitter.cpp b/utils/TableGen/RegisterInfoEmitter.cpp
index 9a1ef8594b9..378671d0fc9 100644
--- a/utils/TableGen/RegisterInfoEmitter.cpp
+++ b/utils/TableGen/RegisterInfoEmitter.cpp
@@ -468,7 +468,7 @@ void RegisterInfoEmitter::run(std::ostream &OS) {
   }
 
   OS<<"\n  const TargetRegisterDesc RegisterDescriptors[] = { // Descriptors\n";
-  OS << "    { \"NOREG\",\t0,\t0,\t0 },\n";
+  OS << "    { \"NOREG\",\t0,\t0,\t0,\t0 },\n";
 
   // Now that register alias and sub-registers sets have been emitted, emit the
   // register descriptors now.