This is part of upstream commit bfd3f88652f4c0eb055776238c1083e4e0916510
diff --git a/src/binwalk/modules/binvis.py b/src/binwalk/modules/binvis.py
index 4835537..a542cff 100644
--- a/src/binwalk/modules/binvis.py
+++ b/src/binwalk/modules/binvis.py
@@ -98,7 +98,7 @@ def _generate_plot_points(self, data_points):
# If the number of data points exceeds the maximum number of allowed data points, use a
# weighting system to eliminate data points that occur less freqently.
- if sum(data_points.itervalues()) > self.max_points:
+ if sum(data_points.values()) > self.max_points:
# First, generate a set of weight values 1 - 10
for i in range(1, 11):