diff --git a/wrappers/cpp/libfreenect.hpp b/wrappers/cpp/libfreenect.hpp
index 675e39b1..a6258c1b 100644
--- a/wrappers/cpp/libfreenect.hpp
+++ b/wrappers/cpp/libfreenect.hpp
@@ -138,9 +138,9 @@ namespace Freenect {
 			return m_dev;
 		}
 		// Do not call directly even in child
-		virtual void VideoCallback(void *video, uint32_t timestamp) = 0;
+		virtual void VideoCallback(void *video, uint32_t timestamp) { }
 		// Do not call directly even in child
-		virtual void DepthCallback(void *depth, uint32_t timestamp) = 0;
+		virtual void DepthCallback(void *depth, uint32_t timestamp) { }
 	  protected:
 		int getVideoBufferSize(){
 			switch(m_video_format) {