void QMMMForceProvider::initCP2KForceEnvironment(const t_commrec& cr)
{
// Check that we have filename either defined in KVT or deduced from *.tpr name
- GMX_RELEASE_ASSERT(parameters_.qmFileNameBase_.empty(),
+ GMX_RELEASE_ASSERT(!parameters_.qmFileNameBase_.empty(),
"Names of CP2K input/output files is not defined in QMMMParameters");