diff --git a/interfaces/python/ck2cti.py b/interfaces/python/ck2cti.py
index df0b4a974..afd38853a 100755
--- a/interfaces/python/ck2cti.py
+++ b/interfaces/python/ck2cti.py
@@ -1110,6 +1110,7 @@ class Parser(object):
             pdepArrhenius = None
             efficiencies = {}
             chebyshevCoeffs = []
+            revReaction = None
 
             # Note that the subsequent lines could be in any order
             for line in lines[1:]:
@@ -1228,6 +1229,9 @@ class Parser(object):
                     for collider, efficiency in zip(tokens[0::2], tokens[1::2]):
                         efficiencies[collider.strip()] = float(efficiency.strip())
 
+            if revReaction:
+                revReaction.duplicate = reaction.duplicate
+
             # Decide which kinetics to keep and store them on the reaction object
             # Only one of these should be true at a time!
             if chebyshev is not None: