diff --git a/dev/fluids/Benzene.json b/dev/fluids/Benzene.json
index db7d243a..45fc3f55 100644
--- a/dev/fluids/Benzene.json
+++ b/dev/fluids/Benzene.json
@@ -418,8 +418,8 @@
       "PH": 0
     }, 
     "FORMULA": "C_{6}H_{6}", 
-    "INCHI_KEY": "UHOVQNZJYSORNB-UHFFFAOYAH", 
-    "INCHI_STRING": "InChI=1/C6H6/c1-2-4-6-5-3-1/h1-6H", 
+    "INCHI_KEY": "UHOVQNZJYSORNB-UHFFFAOYSA-N", 
+    "INCHI_STRING": "InChI=1S/C6H6/c1-2-4-6-5-3-1/h1-6H", 
     "NAME": "Benzene", 
     "REFPROP_NAME": "BENZENE", 
     "SMILES": "c1ccccc1"
@@ -594,4 +594,4 @@
       "sigma_eta_units": "m"
     }
   }
-}
\ No newline at end of file
+}