diff --git a/documentation/source/users/rmg/input.rst b/documentation/source/users/rmg/input.rst
index c5cd2ef913..099a824c11 100644
--- a/documentation/source/users/rmg/input.rst
+++ b/documentation/source/users/rmg/input.rst
@@ -995,7 +995,7 @@ all of RMG's reaction families. ::
         maximumCarbeneRadicals=0,
         maximumIsotopicAtoms=2,
         allowSingletO2 = False,
-        speciesCuttingThreshold=20
+        speciesCuttingThreshold=20,
     )
 
 An additional flag ``allowed`` can be set to allow species