The standard molar enthalpy of formation at the temperature T = 298.15K for the reaction : In2Te5(cr) + 3In(cr) = 5InTe(cr) was determined in a calorimetric bomb. The value of the standard molar enthalpy of formation of In2Te5(cr) was calculated to be -(175.3 +/- 2.9) kJ.mol(-1), with the uncertainty given for a 95 per cent confidence interval.