diff --git a/include/base/cef_build.h b/include/base/cef_build.h
index 594c6ff0a..01b08ffc2 100644
--- a/include/base/cef_build.h
+++ b/include/base/cef_build.h
@@ -132,22 +132,6 @@
 #error Please add support for your compiler in cef_build.h
 #endif
 
-// Annotate a virtual method indicating it must be overriding a virtual
-// method in the parent class.
-// Use like:
-//   virtual void foo() OVERRIDE;
-#ifndef OVERRIDE
-#if defined(__clang__) || defined(COMPILER_MSVC)
-#define OVERRIDE override
-#elif defined(COMPILER_GCC) && __cplusplus >= 201103 && \
-      (__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >= 40700
-// GCC 4.7 supports explicit virtual overrides when C++11 support is enabled.
-#define OVERRIDE override
-#else
-#define OVERRIDE
-#endif
-#endif  // OVERRIDE
-
 // Annotate a function indicating the caller must examine the return value.
 // Use like:
 //   int foo() WARN_UNUSED_RESULT;
@@ -183,4 +167,23 @@
 
 #endif  // !BUILDING_CEF_SHARED
 
+// Annotate a virtual method indicating it must be overriding a virtual method
+// in the parent class.
+// Use like:
+//   void foo() OVERRIDE;
+// NOTE: This define should only be used in classes exposed to the client since
+// C++11 support may not be enabled in client applications. CEF internal classes
+// should use the `override` keyword directly.
+#ifndef OVERRIDE
+#if defined(__clang__) || defined(COMPILER_MSVC)
+#define OVERRIDE override
+#elif defined(COMPILER_GCC) && __cplusplus >= 201103 && \
+      (__GNUC__ * 10000 + __GNUC_MINOR__ * 100) >= 40700
+// GCC 4.7 supports explicit virtual overrides when C++11 support is enabled.
+#define OVERRIDE override
+#else
+#define OVERRIDE
+#endif
+#endif  // OVERRIDE
+
 #endif  // CEF_INCLUDE_BASE_CEF_BUILD_H_
diff --git a/include/cef_base.h b/include/cef_base.h
index c237b9e8d..c9213588a 100644
--- a/include/cef_base.h
+++ b/include/cef_base.h
@@ -113,17 +113,17 @@ class CefRefCount {
 ///
 #define IMPLEMENT_REFCOUNTING(ClassName)            \
   public:                                           \
-    void AddRef() const {                           \
+    void AddRef() const OVERRIDE {                  \
       ref_count_.AddRef();                          \
     }                                               \
-    bool Release() const {                          \
+    bool Release() const OVERRIDE {                 \
       if (ref_count_.Release()) {                   \
         delete static_cast<const ClassName*>(this); \
         return true;                                \
       }                                             \
       return false;                                 \
     }                                               \
-    bool HasOneRef() const {                        \
+    bool HasOneRef() const OVERRIDE {               \
       return ref_count_.HasOneRef();                \
     }                                               \
   private:                                          \
diff --git a/include/cef_runnable.h b/include/cef_runnable.h
index d0a89b7e5..9b3955402 100644
--- a/include/cef_runnable.h
+++ b/include/cef_runnable.h
@@ -148,7 +148,7 @@ class CefRunnableMethod : public CefTask {
       traits_.ReleaseCallee(obj);
   }
 
-  virtual void Execute() {
+  void Execute() OVERRIDE {
     if (obj_)
       DispatchToMethod(obj_, meth_, params_);
   }
@@ -240,7 +240,7 @@ class CefRunnableFunction : public CefTask {
   ~CefRunnableFunction() {
   }
 
-  virtual void Execute() {
+  void Execute() OVERRIDE {
     if (function_)
       DispatchToFunction(function_, params_);
   }