diff --git a/exportcsv.cpp b/exportcsv.cpp
index 7002f185..2e63a5af 100644
--- a/exportcsv.cpp
+++ b/exportcsv.cpp
@@ -171,6 +171,8 @@ void ExportCSV::on_exportButton_clicked()
 
     do {
         ui->progressBar->setValue(ui->progressBar->value()+1);
+        QApplication::processEvents();
+
         Day *day=PROFILE.GetDay(date,MT_CPAP);
         if (day) {
             QString data;