diff --git a/src/osg/TextureRectangle.cpp b/src/osg/TextureRectangle.cpp
index 8a7a45096..7c68f8007 100644
--- a/src/osg/TextureRectangle.cpp
+++ b/src/osg/TextureRectangle.cpp
@@ -543,45 +543,8 @@ void TextureRectangle::copyTexSubImage2D(State& state, int xoffset, int yoffset,
     }
 }
 
-void TextureRectangle::allocateMipmap(State& state) const
+void TextureRectangle::allocateMipmap(State&) const
 {
-    const unsigned int contextID = state.getContextID();
-
-    // get the texture object for the current contextID.
-    TextureObject* textureObject = getTextureObject(contextID);
-    
-    if (textureObject && _textureWidth != 0 && _textureHeight != 0)
-    {
-        // bind texture
-        textureObject->bind();
-
-        // compute number of mipmap levels
-        int width = _textureWidth;
-        int height = _textureHeight;
-        int numMipmapLevels = 1 + (int)floor(log2(maximum(width, height)));
-
-        // we do not reallocate the level 0, since it was already allocated
-        width >>= 1;
-        height >>= 1;
-        
-        for( GLsizei k = 1; k < numMipmapLevels  && (width || height); k++)
-        {
-            if (width == 0)
-                width = 1;
-            if (height == 0)
-                height = 1;
-
-            glTexImage2D( GL_TEXTURE_RECTANGLE, k, _internalFormat,
-                     width, height, _borderWidth,
-                     _sourceFormat ? _sourceFormat : _internalFormat,
-                     _sourceType ? _sourceType : GL_UNSIGNED_BYTE, NULL);
-
-            width >>= 1;
-            height >>= 1;
-        }
-                
-        // inform state that this texture is the current one bound.
-        state.haveAppliedTextureAttribute(state.getActiveTextureUnit(), this);        
-    }
+    osg::notify(osg::NOTICE)<<"Warning: TextureRectangle::allocateMipmap(State&) called eroneously, GL_TEXTURE_RECTANGLE does not support mipmapping."<<std::endl;
 }