diff --git a/app/services/bulk_upload/sales/year2026/row_parser.rb b/app/services/bulk_upload/sales/year2026/row_parser.rb
index 03aed9abf..9b863df8c 100644
--- a/app/services/bulk_upload/sales/year2026/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2026/row_parser.rb
@@ -527,7 +527,7 @@ class BulkUpload::Sales::Year2026::RowParser
       "field_22", # postcode
       "field_28", # age1
       "field_29", # sex1
-      "field_122", #sexRAB1
+      "field_122", # sexrab1
       "field_32", # ecstat1
     )
   end
@@ -795,12 +795,12 @@ private
       lasttransaction: %i[field_104 field_105 field_106],
       initialpurchase: %i[field_100 field_101 field_102],
 
-      sexRAB1: %i[field_122],
-      sexRAB2: %i[field_123],
-      sexRAB3: %i[field_124],
-      sexRAB4: %i[field_125],
-      sexRAB5: %i[field_126],
-      sexRAB6: %i[field_127],
+      sexrab1: %i[field_122],
+      sexrab2: %i[field_123],
+      sexrab3: %i[field_124],
+      sexrab4: %i[field_125],
+      sexrab5: %i[field_126],
+      sexrab6: %i[field_127],
     }
   end
 
@@ -836,12 +836,12 @@ private
     attributes["sex5"] = field_52
     attributes["sex6"] = field_56
 
-    attributes["sexRAB1"] = field_122
-    attributes["sexRAB2"] = field_123
-    attributes["sexRAB3"] = field_124
-    attributes["sexRAB4"] = field_125
-    attributes["sexRAB5"] = field_126
-    attributes["sexRAB6"] = field_127
+    attributes["sexrab1"] = field_122
+    attributes["sexrab2"] = field_123
+    attributes["sexrab3"] = field_124
+    attributes["sexrab4"] = field_125
+    attributes["sexrab5"] = field_126
+    attributes["sexrab6"] = field_127
 
     attributes["relat2"] = relationship_from_is_partner(field_34)
     attributes["relat3"] = relationship_from_is_partner(field_42)
@@ -1269,7 +1269,7 @@ private
     %w[
       saledate
       age1
-      sexRAB1
+      sexrab1
       sex1
       ecstat1
       owning_organisation
diff --git a/spec/services/bulk_upload/sales/year2026/row_parser_spec.rb b/spec/services/bulk_upload/sales/year2026/row_parser_spec.rb
index 81b2d366c..0bf0ce26b 100644
--- a/spec/services/bulk_upload/sales/year2026/row_parser_spec.rb
+++ b/spec/services/bulk_upload/sales/year2026/row_parser_spec.rb
@@ -1434,7 +1434,7 @@ RSpec.describe BulkUpload::Sales::Year2026::RowParser do
       let(:attributes) { { bulk_upload: } }
 
       before do
-        build(:sales_log, owning_organisation: nil, saledate: nil, purchid: nil, age1: nil, sexRAB1: nil, sex1: nil, ecstat1: nil).save(validate: false)
+        build(:sales_log, owning_organisation: nil, saledate: nil, purchid: nil, age1: nil, sexrab1: nil, sex1: nil, ecstat1: nil).save(validate: false)
       end
 
       it "does not add duplicate logs validation to the blank row" do