diff --git a/freqtrade/persistence/migrations.py b/freqtrade/persistence/migrations.py
index a28683e04..f020f990c 100644
--- a/freqtrade/persistence/migrations.py
+++ b/freqtrade/persistence/migrations.py
@@ -159,10 +159,10 @@ def migrate_trades_and_orders_table(
             {initial_stop_loss_pct} initial_stop_loss_pct,
             {stoploss_order_id} stoploss_order_id, {stoploss_last_update} stoploss_last_update,
             {max_rate} max_rate, {min_rate} min_rate,
-            case when {exit_reason} == 'sell_signal' then 'exit_signal'
-                 when {exit_reason} == 'custom_sell' then 'custom_exit'
-                 when {exit_reason} == 'force_sell' then 'force_exit'
-                 when {exit_reason} == 'emergency_sell' then 'emergency_exit'
+            case when {exit_reason} = 'sell_signal' then 'exit_signal'
+                 when {exit_reason} = 'custom_sell' then 'custom_exit'
+                 when {exit_reason} = 'force_sell' then 'force_exit'
+                 when {exit_reason} = 'emergency_sell' then 'emergency_exit'
                  else {exit_reason}
             end exit_reason,
             {exit_order_status} exit_order_status,