diff -r 4b2ac345b982 -r 2f4e250cfed9 src/EditProductTab1.cpp
--- a/src/EditProductTab1.cpp	Sat Jun 18 19:15:22 2022 +0200
+++ b/src/EditProductTab1.cpp	Sat Jun 18 20:39:59 2022 +0200
@@ -456,6 +456,20 @@
 
     /* Tab 10, fermentation */
     ui->tabWidget->setTabEnabled(9, stage > PROD_STAGE_WAIT);
+    if (product->log_fermentation) {
+	ui->ferm_log1Label->show();
+	ui->ferm_log1Button->show();
+    } else {
+	ui->ferm_log1Label->hide();
+        ui->ferm_log1Button->hide();
+    }
+    if (product->log_ispindel) {
+	ui->ferm_log2Label->show();
+        ui->ferm_log2Button->show();
+    } else {
+	ui->ferm_log2Label->hide();
+        ui->ferm_log2Button->hide();
+    }
     ui->prim_enddateEdit->setReadOnly(true);
     ui->prim_enddateEdit->setButtonSymbols(QAbstractSpinBox::NoButtons);
     ui->prim_enddateButton->hide();