diff --git a/auto/Examples/scatter2d/PositionVariance.py b/auto/Examples/scatter2d/PositionVariance.py
index 7c8915d9b8f82fc8446fac44bb3ec9f8cbfc6969..25279a1fdea61c98dfd49de442e18feb22bf39a4 100755
--- a/auto/Examples/scatter2d/PositionVariance.py
+++ b/auto/Examples/scatter2d/PositionVariance.py
@@ -60,7 +60,6 @@ def run_one(hasVariance, xi, nPlot, title):
                           title=title,
                           intensity_max=3e7,
                           intensity_min=3e0,
-                          zlabel=None,
                           aspect='equal',
                           with_cb=False)
 
diff --git a/auto/MiniExamples/scatter2d/PositionVariance.py b/auto/MiniExamples/scatter2d/PositionVariance.py
index a925578813800109db318bbe1a1373b35705f126..a2cb17ce023837db31e9fc06ffc454305a6770c0 100755
--- a/auto/MiniExamples/scatter2d/PositionVariance.py
+++ b/auto/MiniExamples/scatter2d/PositionVariance.py
@@ -60,7 +60,6 @@ def run_one(hasVariance, xi, nPlot, title):
                           title=title,
                           intensity_max=3e7,
                           intensity_min=3e0,
-                          zlabel=None,
                           aspect='equal',
                           with_cb=False)
 
diff --git a/rawEx/scatter2d/PositionVariance.py b/rawEx/scatter2d/PositionVariance.py
index 955f542541922ac4bea528e4569c5feb1c8c4e50..ec884d7fae922ab4637ad856a23adc2915167772 100755
--- a/rawEx/scatter2d/PositionVariance.py
+++ b/rawEx/scatter2d/PositionVariance.py
@@ -60,7 +60,6 @@ def run_one(hasVariance, xi, nPlot, title):
                           title=title,
                           intensity_max=3e7,
                           intensity_min=3e0,
-                          zlabel=None,
                           aspect='equal',
                           with_cb=False)