diff --git a/dev/fluids/R13I1.json b/dev/fluids/R13I1.json
index 7d0a4e8e..65349470 100644
--- a/dev/fluids/R13I1.json
+++ b/dev/fluids/R13I1.json
@@ -250,8 +250,8 @@
       "PH": -1
     }, 
     "FORMULA": "C_{1}F_{3}I_{1}", 
-    "INCHI_KEY": "VPAYJEUHKVESSD-UHFFFAOYAR", 
-    "INCHI_STRING": "InChI=1/CF3I/c2-1(3,4)5", 
+    "INCHI_KEY": "VPAYJEUHKVESSD-UHFFFAOYSA-N", 
+    "INCHI_STRING": "InChI=1S/CF3I/c2-1(3,4)5", 
     "NAME": "R13I1", 
     "REFPROP_NAME": "CF3I", 
     "SMILES": "C(F)(F)(F)I"
@@ -294,4 +294,4 @@
       "smolar_units": "J/mol/K"
     }
   }
-}
\ No newline at end of file
+}