diff --git a/effects/magnifier/magnifier.cpp b/effects/magnifier/magnifier.cpp
--- a/effects/magnifier/magnifier.cpp
+++ b/effects/magnifier/magnifier.cpp
@@ -169,31 +169,31 @@
             // top frame
             verts << area.right() + FRAME_WIDTH << area.top() - FRAME_WIDTH;
             verts << area.left() - FRAME_WIDTH << area.top() - FRAME_WIDTH;
-            verts << area.left() - FRAME_WIDTH << area.top() - 1;
-            verts << area.left() - FRAME_WIDTH << area.top() - 1;
-            verts << area.right() + FRAME_WIDTH << area.top() - 1;
+            verts << area.left() - FRAME_WIDTH << area.top();
+            verts << area.left() - FRAME_WIDTH << area.top();
+            verts << area.right() + FRAME_WIDTH << area.top();
             verts << area.right() + FRAME_WIDTH << area.top() - FRAME_WIDTH;
             // left frame
-            verts << area.left() - 1 << area.top() - FRAME_WIDTH;
+            verts << area.left() << area.top() - FRAME_WIDTH;
             verts << area.left() - FRAME_WIDTH << area.top() - FRAME_WIDTH;
             verts << area.left() - FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
             verts << area.left() - FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
-            verts << area.left() - 1 << area.bottom() + FRAME_WIDTH;
-            verts << area.left() - 1 << area.top() - FRAME_WIDTH;
+            verts << area.left() << area.bottom() + FRAME_WIDTH;
+            verts << area.left() << area.top() - FRAME_WIDTH;
             // right frame
             verts << area.right() + FRAME_WIDTH << area.top() - FRAME_WIDTH;
-            verts << area.right() + 1 << area.top() - FRAME_WIDTH;
-            verts << area.right() + 1 << area.bottom() + FRAME_WIDTH;
-            verts << area.right() + 1 << area.bottom() + FRAME_WIDTH;
+            verts << area.right() << area.top() - FRAME_WIDTH;
+            verts << area.right() << area.bottom() + FRAME_WIDTH;
+            verts << area.right() << area.bottom() + FRAME_WIDTH;
             verts << area.right() + FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
             verts << area.right() + FRAME_WIDTH << area.top() - FRAME_WIDTH;
             // bottom frame
-            verts << area.right() + FRAME_WIDTH << area.bottom() + 1;
-            verts << area.left() - FRAME_WIDTH << area.bottom() + 1;
+            verts << area.right() + FRAME_WIDTH << area.bottom();
+            verts << area.left() - FRAME_WIDTH << area.bottom();
             verts << area.left() - FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
             verts << area.left() - FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
             verts << area.right() + FRAME_WIDTH << area.bottom() + FRAME_WIDTH;
-            verts << area.right() + FRAME_WIDTH << area.bottom() + 1;
+            verts << area.right() + FRAME_WIDTH << area.bottom();
             vbo->setData(verts.size() / 2, 2, verts.constData(), NULL);
 
             ShaderBinder binder(ShaderTrait::UniformColor);