diff --git a/input/kinetics/families/intra_H_migration/groups.py b/input/kinetics/families/intra_H_migration/groups.py
index 7cba17146b..54128d7378 100644
--- a/input/kinetics/families/intra_H_migration/groups.py
+++ b/input/kinetics/families/intra_H_migration/groups.py
@@ -20,6 +20,9 @@
 
 reverseMap = {'*1':'*2','*2':'*1'}
 
+reactantNum = 1
+productNum = 1
+
 boundaryAtoms = ["*1", "*2"]
 
 entry(