diff -r 5028c1c4c526 -r ac216a75ca9b src/EditProductTab3.cpp
--- a/src/EditProductTab3.cpp	Fri Jan 13 15:08:57 2023 +0100
+++ b/src/EditProductTab3.cpp	Sat Jan 14 11:34:51 2023 +0100
@@ -391,7 +391,7 @@
     if (product->brew_aboil_volume > 0)
 	aboil_volume = product->brew_aboil_volume / 1.04;	// Volume @ 20 degrees.
     if (product->brew_fermenter_tcloss == 0) {
-	product->brew_fermenter_tcloss = product->eq_trub_chiller_loss;
+	product->brew_fermenter_tcloss = product->eq_trub_loss;
 	ui->brew_trublossEdit->setValue(product->brew_fermenter_tcloss);
     }
     product->brew_fermenter_volume = aboil_volume - product->brew_fermenter_tcloss + product->brew_fermenter_extrawater;