diff --git a/llvm/tools/gold/gold-plugin.cpp b/llvm/tools/gold/gold-plugin.cpp
index 062f746c8fcb..5365b99efe3f 100644
--- a/llvm/tools/gold/gold-plugin.cpp
+++ b/llvm/tools/gold/gold-plugin.cpp
@@ -544,7 +544,7 @@ static const char *getResolutionName(ld_plugin_symbol_resolution R) {
 }
 
 namespace {
-class LocalValueMaterializer : public ValueMaterializer {
+class LocalValueMaterializer final : public ValueMaterializer {
   DenseSet<GlobalValue *> &Dropped;
   DenseMap<GlobalObject *, GlobalObject *> LocalVersions;