The present application is directed to solid forms of compounds of formula (I): and pharmaceutically acceptable salts thereof, that inhibit bacterial gyrase and/or Topo IV and pharmaceutical compositions comprising said compounds and salts. These compounds and salts are useful in treating bacterial infection.La présente invention concerne des formes solides de composés de formule (I) : et de sels pharmaceutiquement acceptables de ceux-ci, qui inhibent la gyrase bactérienne et/ou la Topo IV et des compositions pharmaceutiques comprenant lesdits composés et sels. Ces composés et sels sont utiles dans le traitement dinfections bactériennes.