diff -r b6a616372a26 -r 4d7394ced1c3 www/js/prod_edit.js
--- a/www/js/prod_edit.js	Fri Sep 18 21:28:45 2020 +0200
+++ b/www/js/prod_edit.js	Sat Sep 19 21:25:11 2020 +0200
@@ -4329,7 +4329,7 @@
   $('#primary_end_brix').on('change', function(event) {
    var OBrix, FBrix, FG;
    if (dataRecord.brew_fermenter_sg >= 1.020) {
-    OBrix = sg_to_brix(dataRecord.brew_fermenter_sg);
+    OBrix = sg_to_plato(dataRecord.brew_fermenter_sg);
     FBrix = parseFloat(event.args.value);
     FG = brix_to_fg(OBrix, FBrix);
     if (FBrix > 0.05) {
@@ -4346,7 +4346,7 @@
   $('#secondary_end_brix').on('change', function(event) {
    var OBrix, FBrix, FG;
    if (dataRecord.brew_fermenter_sg >= 1.020) {
-    OBrix = sg_to_brix(dataRecord.brew_fermenter_sg);
+    OBrix = sg_to_plato(dataRecord.brew_fermenter_sg);
     FBrix = parseFloat(event.args.value);
     FG = brix_to_fg(OBrix, FBrix);
     if (FBrix > 0.05) {
@@ -4359,7 +4359,7 @@
   $('#final_brix').on('change', function(event) {
    var OBrix, FBrix, FG;
    if (dataRecord.brew_fermenter_sg >= 1.020) {
-    OBrix = sg_to_brix(dataRecord.brew_fermenter_sg);
+    OBrix = sg_to_plato(dataRecord.brew_fermenter_sg);
     FBrix = parseFloat(event.args.value);
     FG = brix_to_fg(OBrix, FBrix);
     if (FBrix > 0.05) {