diff --git a/AmpScan/smooth.py b/AmpScan/smooth.py
index ff6bb3755371f39872ab9164d80ba5635f189d4d..2131723c88e302f96e7235169d1b0a66e85acb02 100644
--- a/AmpScan/smooth.py
+++ b/AmpScan/smooth.py
@@ -52,7 +52,7 @@ class smoothMixin(object):
     def smoothValues(self, n=1):
         """
         Function to apply a simple laplacian smooth to the values array. 
-        Identical to the vertex smoothing expect it applies the smoothing 
+        Identical to the vertex smoothing except it applies the smoothing
         to the values
 
         Parameters
diff --git a/tests/test_registration.py b/tests/test_smoothing.py
similarity index 70%
rename from tests/test_registration.py
rename to tests/test_smoothing.py
index 25f1f819488431218ce6a306fe0197787aeec48e..2db678643caf67f9e01eb22e57f87289f9fce4b8 100644
--- a/tests/test_registration.py
+++ b/tests/test_smoothing.py
@@ -1,12 +1,12 @@
 """
-Testing suite for the core module
+Testing suite for the registration module
 """
 
 import unittest
 from util import get_path
 
 
-class TestRegistration(unittest.TestCase):
+class TestSmoothing(unittest.TestCase):
     ACCURACY = 5  # The number of decimal places to value accuracy for - needed due to floating point inaccuracies
 
     def setUp(self):
@@ -17,3 +17,7 @@ class TestRegistration(unittest.TestCase):
         stl_path = get_path("stl_file.stl")
         self.amp = AmpObject(stl_path)
 
+    def test_smoothing(self):
+        # Test that smoothing runs
+        self.amp.smoothValues()
+