diff --git a/stl/__about__.py b/stl/__about__.py
index c7053d4..fd21209 100644
--- a/stl/__about__.py
+++ b/stl/__about__.py
@@ -1,6 +1,6 @@
 __package_name__ = 'numpy-stl'
 __import_name__ = 'stl'
-__version__ = '3.1.0'
+__version__ = '3.1.1'
 __author__ = 'Rick van Hattem'
 __author_email__ = 'Wolph@Wol.ph'
 __description__ = ' '.join('''
diff --git a/stl/base.py b/stl/base.py
index 0110420..f3953ce 100644
--- a/stl/base.py
+++ b/stl/base.py
@@ -419,7 +419,7 @@ def get_mass_properties(self):
         Documentation can be found here:
         http://www.geometrictools.com/Documentation/PolyhedralMassProperties.pdf
         '''
-        self.check()
+        self.check(True)
 
         def subexpression(x):
             w0, w1, w2 = x[:, 0], x[:, 1], x[:, 2]