diff --git a/grudge/symbolic/compiler.py b/grudge/symbolic/compiler.py
index 0d268ea452ee6b04b3530ff9d53d16ef01d739f3..c2f2e5b611e34a2de5be502739075cdb8500bf12 100644
--- a/grudge/symbolic/compiler.py
+++ b/grudge/symbolic/compiler.py
@@ -31,7 +31,7 @@ from pytools import Record, memoize_method, memoize
 from grudge import sym
 import grudge.symbolic.mappers as mappers
 from pymbolic.primitives import Variable, Subscript
-from sys import intern
+from six.moves import intern
 
 
 # {{{ instructions