diff --git a/Software/PC_Application/Traces/tracexyplot.cpp b/Software/PC_Application/Traces/tracexyplot.cpp
index 0ad2ba8..56f6e75 100644
--- a/Software/PC_Application/Traces/tracexyplot.cpp
+++ b/Software/PC_Application/Traces/tracexyplot.cpp
@@ -430,15 +430,15 @@ void TraceXYPlot::draw(QPainter &p)
                 if(i == 0) {
                     // only draw tick lines for primary axis
                     if (pref.Graphs.Color.Ticks.Background.enabled) {
-                        int yCoordTop = Util::Scale<double>(YAxis[i].ticks[j], YAxis[i].rangeMax, YAxis[i].rangeMin, plotAreaTop, w.height() - xAxisSpace);
-                        int yCoordBot = Util::Scale<double>(YAxis[i].ticks[j-1], YAxis[i].rangeMax, YAxis[i].rangeMin, plotAreaTop, w.height() - xAxisSpace);
-                        if(yCoordTop > yCoordBot) {
-                            auto buf = yCoordBot;
-                            yCoordBot = yCoordTop;
-                            yCoordTop = buf;
-                        }
                         if (j%2)
                         {
+                            int yCoordTop = Util::Scale<double>(YAxis[i].ticks[j], YAxis[i].rangeMax, YAxis[i].rangeMin, plotAreaTop, w.height() - xAxisSpace);
+                            int yCoordBot = Util::Scale<double>(YAxis[i].ticks[j-1], YAxis[i].rangeMax, YAxis[i].rangeMin, plotAreaTop, w.height() - xAxisSpace);
+                            if(yCoordTop > yCoordBot) {
+                                auto buf = yCoordBot;
+                                yCoordBot = yCoordTop;
+                                yCoordTop = buf;
+                            }
                             p.setBrush(pref.Graphs.Color.Ticks.Background.background);
                             p.setPen(pref.Graphs.Color.Ticks.Background.background);
                             auto rect = QRect(plotAreaLeft+1, yCoordTop+1, plotAreaWidth-2, yCoordBot-yCoordTop-2);