- myTable->horizontalHeader()->setLabel( i+1, tlts[i] ) :
- myTable->verticalHeader()->setLabel( i+1, tlts[i] );
+ myTable->horizontalHeader()->setLabel( i+1, tlts[i].isNull() ? "" : tlts[i] ) :
+ myTable->verticalHeader()->setLabel( i+1, tlts[i].isNull() ? "" : tlts[i] );