diff --git a/llvm/include/llvm/ProfileData/SampleProfReader.h b/llvm/include/llvm/ProfileData/SampleProfReader.h
index 23a2519354c83a..0e8ee7696c543e 100644
--- a/llvm/include/llvm/ProfileData/SampleProfReader.h
+++ b/llvm/include/llvm/ProfileData/SampleProfReader.h
@@ -656,7 +656,7 @@ class SampleProfileReaderExtBinary : public SampleProfileReaderExtBinaryBase {
   void collectFuncsFrom(const Module &M) override;
 
   /// Return whether names in the profile are all MD5 numbers.
-  virtual bool useMD5() {
+  virtual bool useMD5() override {
     assert(!NameTable.empty() && "NameTable should have been initialized");
     return MD5StringBuf && !MD5StringBuf->empty();
   }
@@ -695,7 +695,7 @@ class SampleProfileReaderCompactBinary : public SampleProfileReaderBinary {
   void collectFuncsFrom(const Module &M) override;
 
   /// Return whether names in the profile are all MD5 numbers.
-  virtual bool useMD5() { return true; }
+  virtual bool useMD5() override { return true; }
 };
 
 using InlineCallStack = SmallVector<FunctionSamples *, 10>;