diff --git a/common/gl/yacreader_flow_gl.cpp b/common/gl/yacreader_flow_gl.cpp
index 6ab56239..76462517 100644
--- a/common/gl/yacreader_flow_gl.cpp
+++ b/common/gl/yacreader_flow_gl.cpp
@@ -325,6 +325,7 @@ void YACReaderFlowGL::paintGL()
 
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
+    glClearColor(0,0,0,1);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     if(numObjects>0)
diff --git a/common/gl_legacy/yacreader_flow_gl.cpp b/common/gl_legacy/yacreader_flow_gl.cpp
index d367e20b..a92bf8e6 100644
--- a/common/gl_legacy/yacreader_flow_gl.cpp
+++ b/common/gl_legacy/yacreader_flow_gl.cpp
@@ -309,8 +309,8 @@ void YACReaderFlowGL::initializeGL()
 
 void YACReaderFlowGL::paintGL()
 {
-	/*glClearDepth(1.0);
-	glClearColor(1,1,1,1);*/
+    /*glClearDepth(1.0);*/
+    glClearColor(0,0,0,1);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	/*glLoadIdentity();
 	glTranslatef(0.0, 0.0, -10.0);