diff --git a/grudge/symbolic/compiler.py b/grudge/symbolic/compiler.py
index 78e42dda7a3ea215d392a8009df9164bf0a891e5..667f64f80ef2e107f51150a6c662ca13124f443e 100644
--- a/grudge/symbolic/compiler.py
+++ b/grudge/symbolic/compiler.py
@@ -61,7 +61,7 @@ class Instruction(Record):
         return not self.__eq__(other)
 
 
-@memoize
+@memoize(use_kwargs=True)
 def _make_dep_mapper(include_subscripts):
     return mappers.DependencyMapper(
             include_operator_bindings=False,