diff --git a/include/IBoneSceneNode.h b/include/IBoneSceneNode.h
index 4032bb0a..a96a28be 100644
--- a/include/IBoneSceneNode.h
+++ b/include/IBoneSceneNode.h
@@ -74,13 +74,13 @@ namespace scene
 		virtual E_BONE_ANIMATION_MODE getAnimationMode() const = 0;
 
 		//! Get the axis aligned bounding box of this node
-		virtual const core::aabbox3d<f32>& getBoundingBox() const = 0;
+		virtual const core::aabbox3d<f32>& getBoundingBox() const _IRR_OVERRIDE_ = 0;
 
 		//! Returns the relative transformation of the scene node.
 		//virtual core::matrix4 getRelativeTransformation() const = 0;
 
 		//! The animation method.
-		virtual void OnAnimate(u32 timeMs) =0;
+		virtual void OnAnimate(u32 timeMs) _IRR_OVERRIDE_ =0;
 
 		//! The render method.
 		/** Does nothing as bones are not visible. */
diff --git a/include/ICameraSceneNode.h b/include/ICameraSceneNode.h
index 2743dae8..a157aac8 100644
--- a/include/ICameraSceneNode.h
+++ b/include/ICameraSceneNode.h
@@ -72,7 +72,7 @@ namespace scene
 		ISceneManager::addCameraSceneNodeFPS, may want to get
 		this input for changing their position, look at target or
 		whatever. */
-		virtual bool OnEvent(const SEvent& event) =0;
+		virtual bool OnEvent(const SEvent& event) _IRR_OVERRIDE_ =0;
 
 		//! Sets the look at target of the camera
 		/** If the camera's target and rotation are bound ( @see
@@ -90,7 +90,7 @@ namespace scene
 		bindTargetAndRotation() ) then calling this will also change
 		the camera's target to match the rotation.
 		\param rotation New rotation of the node in degrees. */
-		virtual void setRotation(const core::vector3df& rotation) =0;
+		virtual void setRotation(const core::vector3df& rotation) _IRR_OVERRIDE_ =0;
 
 		//! Gets the current look at target of the camera
 		/** \return The current look at target of the camera, in world co-ordinates */
diff --git a/include/IGUIFontBitmap.h b/include/IGUIFontBitmap.h
index 42b94d94..4141236e 100644
--- a/include/IGUIFontBitmap.h
+++ b/include/IGUIFontBitmap.h
@@ -36,7 +36,7 @@ public:
 	kerning value. For example, EGFT_BITMAP will add the right kerning value of previousLetter to the
 	left side kerning value of thisLetter, then add the global value.
 	*/
-	virtual s32 getKerningWidth(const wchar_t* thisLetter=0, const wchar_t* previousLetter=0) const = 0;
+	virtual s32 getKerningWidth(const wchar_t* thisLetter=0, const wchar_t* previousLetter=0) const _IRR_OVERRIDE_ = 0;
 };
 
 } // end namespace gui