diff --git a/libs/positions/src/lib/positions-manager.tsx b/libs/positions/src/lib/positions-manager.tsx
index 88eca9578..e07dccf1c 100644
--- a/libs/positions/src/lib/positions-manager.tsx
+++ b/libs/positions/src/lib/positions-manager.tsx
@@ -45,11 +45,12 @@ export const PositionsManager = ({
           {
             marketId: marketId,
             type: Schema.OrderType.TYPE_MARKET as const,
-            timeInForce: Schema.OrderTimeInForce.TIME_IN_FORCE_FOK as const,
+            timeInForce: Schema.OrderTimeInForce.TIME_IN_FORCE_IOC as const,
             side: openVolume.startsWith('-')
               ? Schema.Side.SIDE_BUY
               : Schema.Side.SIDE_SELL,
             size: openVolume.replace('-', ''),
+            reduceOnly: true,
           },
         ],
       },
diff --git a/libs/wallet/src/connectors/vega-connector.ts b/libs/wallet/src/connectors/vega-connector.ts
index 7fb2babb9..0199e4aea 100644
--- a/libs/wallet/src/connectors/vega-connector.ts
+++ b/libs/wallet/src/connectors/vega-connector.ts
@@ -45,6 +45,7 @@ export interface OrderSubmission {
   size: string;
   price?: string;
   expiresAt?: string;
+  reduceOnly?: boolean;
 }
 
 export interface OrderCancellation {