diff --git a/include/osg/FrameBufferObject b/include/osg/FrameBufferObject
index fbbd27d61..8edc1605d 100644
--- a/include/osg/FrameBufferObject
+++ b/include/osg/FrameBufferObject
@@ -350,8 +350,12 @@ namespace osg
         void attach(State &state, GLenum target, GLenum attachment_point, const FBOExtensions* ext) const;
         int compare(const FrameBufferAttachment &fa) const;
 
-        RenderBuffer* getRenderBuffer() const;
-        Texture* getTexture() const;
+        RenderBuffer* getRenderBuffer();
+        const RenderBuffer* getRenderBuffer() const;
+
+        Texture* getTexture();
+        const Texture* getTexture() const;
+
         int getCubeMapFace() const;
         int getTextureLevel() const;
         int getTexture3DZOffset() const;
diff --git a/src/osg/FrameBufferObject.cpp b/src/osg/FrameBufferObject.cpp
index b491f76fa..f7038ec71 100644
--- a/src/osg/FrameBufferObject.cpp
+++ b/src/osg/FrameBufferObject.cpp
@@ -575,12 +575,22 @@ int FrameBufferAttachment::compare(const FrameBufferAttachment &fa) const
     return 0;
 }
 
-RenderBuffer* FrameBufferAttachment::getRenderBuffer() const
+RenderBuffer* FrameBufferAttachment::getRenderBuffer()
 {
     return _ximpl->renderbufferTarget.get();
 }
 
-Texture* FrameBufferAttachment::getTexture() const
+Texture* FrameBufferAttachment::getTexture()
+{
+    return _ximpl->textureTarget.get();
+}
+
+const RenderBuffer* FrameBufferAttachment::getRenderBuffer() const
+{
+    return _ximpl->renderbufferTarget.get();
+}
+
+const Texture* FrameBufferAttachment::getTexture() const
 {
     return _ximpl->textureTarget.get();
 }