diff --git a/scripts/cov.py b/scripts/cov.py
index 71626df2..eb3ddec4 100755
--- a/scripts/cov.py
+++ b/scripts/cov.py
@@ -227,10 +227,11 @@ class CsvFrac(co.namedtuple('CsvFrac', 'a,b')):
     def __mod__(self, other):
         return self.__class__(self.a % other.a, self.b % other.b)
 
+    def __hash__(self):
+        return super().__hash__()
+
     def __eq__(self, other):
-        self_a, self_b = self if self.b.a else (CsvInt(1), CsvInt(1))
-        other_a, other_b = other if other.b.a else (CsvInt(1), CsvInt(1))
-        return self_a * other_b == other_a * self_b
+        return super().__eq__(other)
 
     def __ne__(self, other):
         return not self.__eq__(other)
diff --git a/scripts/csv.py b/scripts/csv.py
index 1044df97..d587f993 100755
--- a/scripts/csv.py
+++ b/scripts/csv.py
@@ -357,10 +357,11 @@ class CsvFrac(co.namedtuple('CsvFrac', 'a,b')):
     def __mod__(self, other):
         return self.__class__(self.a % other.a, self.b % other.b)
 
+    def __hash__(self):
+        return super().__hash__()
+
     def __eq__(self, other):
-        self_a, self_b = self if self.b.a else (CsvInt(1), CsvInt(1))
-        other_a, other_b = other if other.b.a else (CsvInt(1), CsvInt(1))
-        return self_a * other_b == other_a * self_b
+        return super().__eq__(other)
 
     def __ne__(self, other):
         return not self.__eq__(other)