diff --git a/pymbolic/mapper/evaluator.py b/pymbolic/mapper/evaluator.py
index b7921bdbefd7fc6f456388a318ef0505b5b02c72..6b4542a6cfacb8e9de4bf071a8d9456dcf427872 100644
--- a/pymbolic/mapper/evaluator.py
+++ b/pymbolic/mapper/evaluator.py
@@ -46,6 +46,9 @@ class EvaluationMapper(RecursiveMapper):
     def map_floor_div(self, expr):
         return self.rec(expr.numerator) // self.rec(expr.denominator)
 
+    def map_remainder(self, expr):
+        return self.rec(expr.numerator) % self.rec(expr.denominator)
+
     def map_power(self, expr):
         return self.rec(expr.base) ** self.rec(expr.exponent)