Provided herein is a hydrogen chloride salt of l -(3-/t?r/-butyl-l-p-tolyl-lH-pyrazol-5- yl)-3-(5-fluoro-2-(l-(2-hydroxyethyl)-l H-indazol-5-yloxy)benzyl)urea, crystalline forms of l-(3-½^butyl- l ^-tolyl-lH-pyrazol-5-yl)-3-(5-fluoro-2-( l-(2-hydroxyethyl)-lH-indazol-5- yloxy)benzyl)urea hydrochloride, processes for the preparation of said crystalline forms, pharmaceutical compositions containing a crystalline form of l-(3-r