diff --git a/dev/fluids/Fluorine.json b/dev/fluids/Fluorine.json
index c0d3b0f9..ef4241d1 100644
--- a/dev/fluids/Fluorine.json
+++ b/dev/fluids/Fluorine.json
@@ -503,8 +503,8 @@
       "PH": 0
     }, 
     "FORMULA": "F_{2}", 
-    "INCHI_KEY": "PXGOKWXKJXAPGV-UHFFFAOYAO", 
-    "INCHI_STRING": "InChI=1/F2/c1-2", 
+    "INCHI_KEY": "PXGOKWXKJXAPGV-UHFFFAOYSA-N", 
+    "INCHI_STRING": "InChI=1S/F2/c1-2", 
     "NAME": "Fluorine", 
     "REFPROP_NAME": "FLUORINE", 
     "SMILES": "FF"
@@ -547,4 +547,4 @@
       "smolar_units": "J/mol/K"
     }
   }
-}
\ No newline at end of file
+}