The scintillation response of liquid scintillator NE 213 has been studied as function of temperature in the range 225 to 300 K. It has been found that the light output under gamma excitation increases with decrease in temperature. The data is well encompassed by the relation:Ilow−I=I0exp(−E/kT), whereIis the count rate at temperatureT, Ilowis a constant equal to 750 counts/minute, the pre-exponential factorI0is 15 × 105counts/minute,kis the Boltzmann constant andEis the activation energy equal to 0.21 eV, which is typical for a diffusion controlled process in the temperature range studied.