diff --git a/pymbolic/mapper/__init__.py b/pymbolic/mapper/__init__.py
index 686e682b4816c805f44f5391b7d055a43753d730..a2d4ec5c4c29bede248e7d97b1ad81eada21ac99 100644
--- a/pymbolic/mapper/__init__.py
+++ b/pymbolic/mapper/__init__.py
@@ -205,6 +205,8 @@ class IdentityMapperBase(object):
         return expr.__class__(self.rec(expr.numerator, *args),
                               self.rec(expr.denominator, *args))
 
+    map_floor_div = map_quotient
+
     def map_power(self, expr, *args):
         return expr.__class__(self.rec(expr.base, *args),
                               self.rec(expr.exponent, *args))