diff --git a/src/barchart/qbarseries.cpp b/src/barchart/qbarseries.cpp
index 34c342c..f6ffddc 100644
--- a/src/barchart/qbarseries.cpp
+++ b/src/barchart/qbarseries.cpp
@@ -414,7 +414,7 @@ void QBarSeriesPrivate::scaleDomain(Domain& domain)
     qreal y = max();
     minX = qMin(minX, x) - 0.5;
     minY = qMin(minY, y);
-    maxX = qMax(maxX, x) + 0.5;
+    maxX = qMax(maxX, x) - 0.5;
     maxY = qMax(maxY, y);
     tickXCount = x+1;