diff --git a/Utilities/Input_Libraries/Chemical_Mechanisms/Cantera/grimech30.spec b/Utilities/Input_Libraries/Chemical_Mechanisms/Cantera/grimech30.spec
index 57207403693..adebc5d34f5 100644
--- a/Utilities/Input_Libraries/Chemical_Mechanisms/Cantera/grimech30.spec
+++ b/Utilities/Input_Libraries/Chemical_Mechanisms/Cantera/grimech30.spec
@@ -7,7 +7,7 @@ OH,HYDROXYL RADICAL
 H2O,WATER VAPOR
 HO2,HYDROPEROXY RADICAL
 H2O2,HYDROGEN PEROXIDE
-C,SOOT
+C,SOOTg
 CH,METHYLIDYNE
 CH2,METHYLENE
 CH2(S),METHYLENEs