diff --git a/logPlus/qmycustomplot.cpp b/logPlus/qmycustomplot.cpp
index 2e6f0c3..bee2dac 100644
--- a/logPlus/qmycustomplot.cpp
+++ b/logPlus/qmycustomplot.cpp
@@ -114,7 +114,7 @@ void QMyCustomPlot::changePropertyWaveUpdate()
 		clearGraphs();
 		clearItems();
 
-		if (this->m_colorMap)
+		if (this->m_colorMap && this->m_bX2Y)
 		{
 			QCPAxis *yAxis = this->yAxis;
 			QCPAxis *xAxis = this->xAxis;