diff --git a/qt/qt_common/map_widget.cpp b/qt/qt_common/map_widget.cpp
index 7d7ab8f432..31c6a56072 100644
--- a/qt/qt_common/map_widget.cpp
+++ b/qt/qt_common/map_widget.cpp
@@ -426,7 +426,7 @@ void MapWidget::paintGL()
     int const samplerSizeLocation = m_program->uniformLocation("u_samplerSize");
     m_program->setUniformValue(samplerSizeLocation, samplerSize);
 
-    funcs->glClearColor(0.5, 0.5, 0.5, 1.0);
+    funcs->glClearColor(0.0, 0.0, 0.0, 1.0);
     funcs->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     funcs->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);