diff --git a/src/plugins/editing/CellMLZincMappingView/src/cellmlzincmappingviewzincwidget.cpp b/src/plugins/editing/CellMLZincMappingView/src/cellmlzincmappingviewzincwidget.cpp
index 149dfa2b2c..ba5c8d8460 100644
--- a/src/plugins/editing/CellMLZincMappingView/src/cellmlzincmappingviewzincwidget.cpp
+++ b/src/plugins/editing/CellMLZincMappingView/src/cellmlzincmappingviewzincwidget.cpp
@@ -366,10 +366,10 @@ void CellMLZincMappingViewZincWidget::draw()
 
     //TODO is it the best way to guess ? Maybe min is more accurate
     //TODO is the cast in function below ok ??
-    double doubleValue = qLn(0.0015*qMax(right-left,qMax(top-bottom,farPlane-nearPlane)))*invLnNodeSizeExp;
+    int nodeSize= qCeil(qLn(0.0017*qMax(right-left,qMax(top-bottom,farPlane-nearPlane)))*invLnNodeSizeExp);
 
-    mEditingWidget->setWheelPosition(doubleValue);
-    setNodeSizes(doubleValue);
+    mEditingWidget->setWheelPosition(nodeSize);
+    setNodeSizes(nodeSize);
 }
 
 //==============================================================================