diff --git a/openbr/plugins/imgproc/rootnorm.cpp b/openbr/plugins/imgproc/rootnorm.cpp
deleted file mode 100644
index 0f11d85..0000000
--- a/openbr/plugins/imgproc/rootnorm.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * Copyright 2012 The MITRE Corporation                                      *
- *                                                                           *
- * Licensed under the Apache License, Version 2.0 (the "License");           *
- * you may not use this file except in compliance with the License.          *
- * You may obtain a copy of the License at                                   *
- *                                                                           *
- *     http://www.apache.org/licenses/LICENSE-2.0                            *
- *                                                                           *
- * Unless required by applicable law or agreed to in writing, software       *
- * distributed under the License is distributed on an "AS IS" BASIS,         *
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  *
- * See the License for the specific language governing permissions and       *
- * limitations under the License.                                            *
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-#include <openbr/plugins/openbr_internal.h>
-
-using namespace cv;
-
-namespace br
-{
-
-/*!
- * \ingroup transforms
- * \brief dst=sqrt(norm_L1(src)) proposed as RootSIFT (see paper)
- * \br_paper Arandjelovic, Relja, and Andrew Zisserman.
- *           "Three things everyone should know to improve object retrieval."
- *           Computer Vision and Pattern Recognition (CVPR), 2012 IEEE Conference on. IEEE, 2012.
- * \author Josh Klontz \cite jklontz
- */
-class RootNormTransform : public UntrainableTransform
-{
-    Q_OBJECT
-
-    void project(const Template &src, Template &dst) const
-    {
-        const Mat &m = src;
-        dst.m() = Mat(m.rows, m.cols, m.type());
-        for (int i=0; i<m.rows; i++) {
-            Mat temp;
-            cv::normalize(m.row(i), temp, 1, 0, NORM_L1);
-            cv::sqrt(temp, temp);
-            temp.copyTo(dst.m().row(i));
-        }
-    }
-};
-
-BR_REGISTER(Transform, RootNormTransform)
-
-} // namespace br
-
-#include "imgproc/rootnorm.moc"