diff --git a/sqlalchemy_utils/primitives/country.py b/sqlalchemy_utils/primitives/country.py
index d874182..bae9ea5 100644
--- a/sqlalchemy_utils/primitives/country.py
+++ b/sqlalchemy_utils/primitives/country.py
@@ -85,6 +85,9 @@ class Country(object):
         else:
             return NotImplemented
 
+    def __hash__(self):
+        return hash(self.code)
+
     def __ne__(self, other):
         return not (self == other)