diff --git a/openmc/data/decay.py b/openmc/data/decay.py
index a477f06cfa..3e7d9599c6 100644
--- a/openmc/data/decay.py
+++ b/openmc/data/decay.py
@@ -299,7 +299,7 @@ class Decay(EqualityMixin):
     decay_constant : uncertainties.UFloat
         Decay constant in inverse seconds.
     decay_energy : uncertainties.UFloat
-        Average energy in [eV] per decay for a decay heat
+        Average energy in [eV] per decay for decay heat applications
     half_life : uncertainties.UFloat
         Half-life of the decay in seconds.
     modes : list