diff --git a/src/sage/algebras/clifford_algebra.py b/src/sage/algebras/clifford_algebra.py
index b00c252a31a..d40e330819f 100644
--- a/src/sage/algebras/clifford_algebra.py
+++ b/src/sage/algebras/clifford_algebra.py
@@ -573,8 +573,8 @@ def __contains__(self, elt):
         return elt.capacity() <= self._nbits
 
     def _an_element_(self):
-        """
-        Returns an element of ``self``.
+        r"""
+        Return an element of ``self``.
 
         EXAMPLES::