diff --git a/toargridding/metadata.py b/toargridding/metadata.py
index 43ba5bed251006a76c0566f11c84122d890b3f39..2c608850a2e3cebbee09f4ca1278a3ba137feb4e 100644
--- a/toargridding/metadata.py
+++ b/toargridding/metadata.py
@@ -37,7 +37,7 @@ class TimeSample:
 
     @property
     def frequency(self):
-        TIME_FREQUENCIES[self.sampling]
+        return TIME_FREQUENCIES[self.sampling]
 
     def as_cf_index(self):
         n_days = (self.end - self.start).days