diff --git a/glslang/MachineIndependent/preprocessor/PpContext.h b/glslang/MachineIndependent/preprocessor/PpContext.h
index 77b49d2b..eb2cf0a1 100644
--- a/glslang/MachineIndependent/preprocessor/PpContext.h
+++ b/glslang/MachineIndependent/preprocessor/PpContext.h
@@ -245,9 +245,9 @@ protected:
                 delete expandedArgs[i];
         }
 
-        virtual int scan(TPpToken*);
-        virtual int getch() { assert(0); return EndOfInput; }
-        virtual void ungetch() { assert(0); }
+        virtual int scan(TPpToken*) override;
+        virtual int getch() override { assert(0); return EndOfInput; }
+        virtual void ungetch() override { assert(0); }
         bool peekPasting() override { return prepaste; }
         bool endOfReplacementList() override { return mac->body.current >= mac->body.data.size(); }
 
@@ -264,7 +264,7 @@ protected:
     class tMarkerInput : public tInput {
     public:
         tMarkerInput(TPpContext* pp) : tInput(pp) { }
-        virtual int scan(TPpToken*)
+        virtual int scan(TPpToken*) override
         {
             if (done)
                 return EndOfInput;
@@ -272,17 +272,17 @@ protected:
 
             return marker;
         }
-        virtual int getch() { assert(0); return EndOfInput; }
-        virtual void ungetch() { assert(0); }
+        virtual int getch() override { assert(0); return EndOfInput; }
+        virtual void ungetch() override { assert(0); }
         static const int marker = -3;
     };
 
     class tZeroInput : public tInput {
     public:
         tZeroInput(TPpContext* pp) : tInput(pp) { }
-        virtual int scan(TPpToken*);
-        virtual int getch() { assert(0); return EndOfInput; }
-        virtual void ungetch() { assert(0); }
+        virtual int scan(TPpToken*) override;
+        virtual int getch() override { assert(0); return EndOfInput; }
+        virtual void ungetch() override { assert(0); }
     };
 
     std::vector<tInput*> inputStack;
@@ -329,9 +329,9 @@ protected:
     class tTokenInput : public tInput {
     public:
         tTokenInput(TPpContext* pp, TokenStream* t, bool prepasting) : tInput(pp), tokens(t), lastTokenPastes(prepasting) { }
-        virtual int scan(TPpToken *);
-        virtual int getch() { assert(0); return EndOfInput; }
-        virtual void ungetch() { assert(0); }
+        virtual int scan(TPpToken *) override;
+        virtual int getch() override { assert(0); return EndOfInput; }
+        virtual void ungetch() override { assert(0); }
         virtual bool peekPasting() override;
     protected:
         TokenStream* tokens;
@@ -341,9 +341,9 @@ protected:
     class tUngotTokenInput : public tInput {
     public:
         tUngotTokenInput(TPpContext* pp, int t, TPpToken* p) : tInput(pp), token(t), lval(*p) { }
-        virtual int scan(TPpToken *);
-        virtual int getch() { assert(0); return EndOfInput; }
-        virtual void ungetch() { assert(0); }
+        virtual int scan(TPpToken *) override;
+        virtual int getch() override { assert(0); return EndOfInput; }
+        virtual void ungetch() override { assert(0); }
     protected:
         int token;
         TPpToken lval;
@@ -355,12 +355,12 @@ protected:
     class tStringInput : public tInput {
     public:
         tStringInput(TPpContext* pp, TInputScanner& i) : tInput(pp), input(&i) { }
-        virtual int scan(TPpToken*);
+        virtual int scan(TPpToken*) override;
 
         // Scanner used to get source stream characters.
         //  - Escaped newlines are handled here, invisibly to the caller.
         //  - All forms of newline are handled, and turned into just a '\n'.
-        int getch()
+        int getch() override
         {
             int ch = input->get();
 
@@ -398,7 +398,7 @@ protected:
         // handled here, invisibly to the caller, meaning have to undo exactly
         // what getch() above does (e.g., don't leave things in the middle of a
         // sequence of escaped newlines).
-        void ungetch()
+        void ungetch() override
         {
             input->unget();
 
diff --git a/hlsl/hlslParseHelper.h b/hlsl/hlslParseHelper.h
index 3ffe3525..d017a2a7 100755
--- a/hlsl/hlslParseHelper.h
+++ b/hlsl/hlslParseHelper.h
@@ -50,18 +50,18 @@ public:
                      const TString sourceEntryPointName,
                      bool forwardCompatible = false, EShMessages messages = EShMsgDefault);
     virtual ~HlslParseContext();
-    void initializeExtensionBehavior();
+    void initializeExtensionBehavior() override;
 
-    void setLimits(const TBuiltInResource&);
-    bool parseShaderStrings(TPpContext&, TInputScanner& input, bool versionWillBeError = false);
-    virtual const char* getGlobalUniformBlockName() { return "$Global"; }
+    void setLimits(const TBuiltInResource&) override;
+    bool parseShaderStrings(TPpContext&, TInputScanner& input, bool versionWillBeError = false) override;
+    virtual const char* getGlobalUniformBlockName() override { return "$Global"; }
 
-    void reservedPpErrorCheck(const TSourceLoc&, const char* /*name*/, const char* /*op*/) { }
-    bool lineContinuationCheck(const TSourceLoc&, bool /*endOfComment*/) { return true; }
-    bool lineDirectiveShouldSetNextLine() const { return true; }
+    void reservedPpErrorCheck(const TSourceLoc&, const char* /*name*/, const char* /*op*/) override { }
+    bool lineContinuationCheck(const TSourceLoc&, bool /*endOfComment*/) override { return true; }
+    bool lineDirectiveShouldSetNextLine() const override { return true; }
     bool builtInName(const TString&);
 
-    void handlePragma(const TSourceLoc&, const TVector<TString>&);
+    void handlePragma(const TSourceLoc&, const TVector<TString>&) override;
     TIntermTyped* handleVariable(const TSourceLoc&, TSymbol* symbol,  const TString* string);
     TIntermTyped* handleBracketDereference(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index);
     TIntermTyped* handleBracketOperator(const TSourceLoc&, TIntermTyped* base, TIntermTyped* index);
@@ -134,7 +134,7 @@ public:
     TIntermTyped* constructAggregate(TIntermNode*, const TType&, int, const TSourceLoc&);
     TIntermTyped* constructBuiltIn(const TType&, TOperator, TIntermTyped*, const TSourceLoc&, bool subset);
     void declareBlock(const TSourceLoc&, TType&, const TString* instanceName = 0, TArraySizes* arraySizes = 0);
-    void finalizeGlobalUniformBlockLayout(TVariable& block);
+    void finalizeGlobalUniformBlockLayout(TVariable& block) override;
     void fixBlockLocations(const TSourceLoc&, TQualifier&, TTypeList&, bool memberWithLocation, bool memberWithoutLocation);
     void fixBlockXfbOffsets(TQualifier&, TTypeList&);
     void fixBlockUniformOffsets(const TQualifier&, TTypeList&);