diff --git a/openmc/deplete/microxs.py b/openmc/deplete/microxs.py
index c1c4cb7acf4..d80c52baa9f 100644
--- a/openmc/deplete/microxs.py
+++ b/openmc/deplete/microxs.py
@@ -24,6 +24,7 @@
 
 _valid_rxns = list(REACTIONS)
 _valid_rxns.append('fission')
+_valid_rxns.append('damage-energy')
 
 
 def _resolve_chain_file_path(chain_file: str):