diff --git a/src/effects/colorpicker/colorpicker.cpp b/src/effects/colorpicker/colorpicker.cpp
index d0b66c46b0..dd99229723 100644
--- a/src/effects/colorpicker/colorpicker.cpp
+++ b/src/effects/colorpicker/colorpicker.cpp
@@ -57,10 +57,11 @@ void ColorPickerEffect::paintScreen(int mask, const QRegion &region, ScreenPaint
     const QRect geo = effects->renderTargetRect();
     if (m_scheduledPosition != QPoint(-1, -1) && geo.contains(m_scheduledPosition)) {
         uint8_t data[4];
+        constexpr GLsizei PIXEL_SIZE = 1;
         const QPoint screenPosition(m_scheduledPosition.x() - geo.x(), m_scheduledPosition.y() - geo.y());
-        const QPoint texturePosition(screenPosition.x() * effects->renderTargetScale(), (geo.height() - screenPosition.y()) * effects->renderTargetScale());
+        const QPoint texturePosition(screenPosition.x() * effects->renderTargetScale(), (geo.height() - screenPosition.y() - PIXEL_SIZE) * effects->renderTargetScale());
 
-        glReadnPixels(texturePosition.x(), texturePosition.y(), 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 4, data);
+        glReadnPixels(texturePosition.x(), texturePosition.y(), PIXEL_SIZE, PIXEL_SIZE, GL_RGBA, GL_UNSIGNED_BYTE, 4, data);
         QDBusConnection::sessionBus().send(m_replyMessage.createReply(QColor(data[0], data[1], data[2])));
         m_picking = false;
         m_scheduledPosition = QPoint(-1, -1);