diff --git a/src/sage/algebras/lie_algebras/heisenberg.py b/src/sage/algebras/lie_algebras/heisenberg.py
index 629fb0a8306..519b39546b6 100644
--- a/src/sage/algebras/lie_algebras/heisenberg.py
+++ b/src/sage/algebras/lie_algebras/heisenberg.py
@@ -122,6 +122,21 @@ def _repr_term(self, m):
         """
         return m
 
+    def _ascii_art_term(self, m):
+        r"""
+        Return a string representation of the term indexed by ``m``.
+
+        EXAMPLES::
+
+            sage: H = lie_algebras.Heisenberg(QQ, 3)
+            sage: H._ascii_art_term('p1')
+            p1
+            sage: H._ascii_art_term('z')
+            z
+        """
+        from sage.typeset.ascii_art import ascii_art
+        return ascii_art(m)
+
     def _latex_term(self, m):
         r"""
         Return a string representation of the term indexed by ``m``.