It was shown that addition of the studied organic acids significantly increases the yield and rate of hydrogen generation via hydrolysis of magnesium hydride by preventing the formation of Mg(OH)2 passivation layer, even if the acid concentration in the solution is as low as 1 wt.%. The hydrogen yield achieved after 3-5 minutes from starting the hydrolysis reaction in the acidic solution increases with the increase of the Acid/MgH2 ratio and approaches 100% when the molar ratio Acid/MgH2 exceeds 0.9, 2.0 and 2.7 for the citric, oxalic, and acetic acid, respectively.