diff --git a/src/DataStructures.cpp b/src/DataStructures.cpp
index a520275e..940facb8 100644
--- a/src/DataStructures.cpp
+++ b/src/DataStructures.cpp
@@ -70,7 +70,7 @@ parameter_info parameter_info_list[] = {
     parameter_info(iP_triple, "p_triple","O","Pa","Pressure at the triple point (pure only)",true),
     parameter_info(ifraction_min, "fraction_min","O","-","Fraction (mole, mass, volume) minimum value for incompressible solutions",true),
     parameter_info(ifraction_max, "fraction_max","O","-","Fraction (mole, mass, volume) maximum value for incompressible solutions",true),
-    parameter_info(iT_freeze, "T_freeze","O","-","Freezing temperature incompressible solutions",true),
+    parameter_info(iT_freeze, "T_freeze","O","K","Freezing temperature for incompressible solutions",true),
     
     parameter_info(ispeed_sound, "speed_of_sound","O","m/s","Speed of sound",false),
     parameter_info(iviscosity, "viscosity","O","Pa-s","Viscosity",false),