diff --git a/lightpreview/glview.cpp b/lightpreview/glview.cpp
index 05731135..d5a7ed0d 100644
--- a/lightpreview/glview.cpp
+++ b/lightpreview/glview.cpp
@@ -130,7 +130,7 @@ void GLView::initializeGL()
 void GLView::paintGL()
 {
     // draw
-    glClearColor(0, 0, 0, 1);
+    glClearColor(0.1, 0.1, 0.1, 1);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     m_program->bind();