diff --git a/testsuite/MDAnalysisTests/topology/test_guessers.py b/testsuite/MDAnalysisTests/topology/test_guessers.py
index 8b5e4fe08bc..7e91082d7b2 100644
--- a/testsuite/MDAnalysisTests/topology/test_guessers.py
+++ b/testsuite/MDAnalysisTests/topology/test_guessers.py
@@ -92,6 +92,7 @@ def test_guess_atom_element_1H(self):
         ('he', 'H'), 
         ('zn', 'ZN'),
         ('Ca2+', 'CA'),
+        ('CA', 'C'),
     ))
     def test_guess_element_from_name(self, name, element):
         assert guessers.guess_atom_element(name) == element