diff --git a/plugins/scenes/opengl/scene_opengl.cpp b/plugins/scenes/opengl/scene_opengl.cpp
index e1f944b1c1..cb40a7a1c4 100644
--- a/plugins/scenes/opengl/scene_opengl.cpp
+++ b/plugins/scenes/opengl/scene_opengl.cpp
@@ -2063,7 +2063,7 @@ void SceneOpenGL::EffectFrame::updateUnstyledTexture()
     delete m_unstyledPixmap;
     m_unstyledPixmap = nullptr;
     // Based off circle() from kwinxrenderutils.cpp
-#define CS 8
+    const int CS = 8;
     m_unstyledPixmap = new QPixmap(2 * CS, 2 * CS);
     m_unstyledPixmap->fill(Qt::transparent);
     QPainter p(m_unstyledPixmap);
@@ -2072,7 +2072,6 @@ void SceneOpenGL::EffectFrame::updateUnstyledTexture()
     p.setBrush(Qt::black);
     p.drawEllipse(m_unstyledPixmap->rect());
     p.end();
-#undef CS
     m_unstyledTexture = new GLTexture(*m_unstyledPixmap);
 }