diff --git a/openbr/plugins/imgproc/slidingwindow.cpp b/openbr/plugins/imgproc/slidingwindow.cpp
index 8537699..31bf939 100644
--- a/openbr/plugins/imgproc/slidingwindow.cpp
+++ b/openbr/plugins/imgproc/slidingwindow.cpp
@@ -138,7 +138,7 @@ class SlidingWindowTransform : public MetaTransform
                     u.file.set("Confidence", confidences[j]);
                     const QRectF rect = OpenCVUtils::fromRect(rects[j]);
                     u.file.appendRect(rect);
-                    u.file.set(model, rect);
+                    u.file.set("Face", rect);
                     dst.append(u);
                 }
             }
diff --git a/openbr/plugins/representation/square.cpp b/openbr/plugins/representation/square.cpp
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/openbr/plugins/representation/square.cpp
@@ -0,0 +1 @@
+