diff --git a/libs/orders/src/lib/components/order-list/order-edit-dialog.tsx b/libs/orders/src/lib/components/order-list/order-edit-dialog.tsx
index 3b713bfed..dfc36d530 100644
--- a/libs/orders/src/lib/components/order-list/order-edit-dialog.tsx
+++ b/libs/orders/src/lib/components/order-list/order-edit-dialog.tsx
@@ -4,6 +4,7 @@ import {
   toDecimal,
   Size,
   getDateTimeFormat,
+  addDecimal,
 } from '@vegaprotocol/react-helpers';
 import { Schema } from '@vegaprotocol/types';
 import {
@@ -26,6 +27,7 @@ interface OrderEditDialogProps {
 
 interface FormFields {
   limitPrice: string;
+  size: string;
 }
 
 export const OrderEditDialog = ({
@@ -41,15 +43,13 @@ export const OrderEditDialog = ({
     handleSubmit,
   } = useForm<FormFields>({
     defaultValues: {
-      limitPrice: addDecimalsFormatNumber(
-        order.price,
-        order.market?.decimalPlaces ?? 0
-      ),
+      limitPrice: addDecimal(order.price, order.market?.decimalPlaces ?? 0),
+      size: addDecimal(order.size, order.market?.positionDecimalPlaces ?? 0),
     },
   });
 
   const step = toDecimal(order.market?.decimalPlaces ?? 0);
-
+  const stepSize = toDecimal(order.market?.positionDecimalPlaces ?? 0);
   return (
     <Dialog
       open={isOpen}
@@ -96,25 +96,48 @@ export const OrderEditDialog = ({
       <form
         onSubmit={handleSubmit(onSubmit)}
         data-testid="edit-order"
-        className="w-1/2 mt-4"
+        className="w-full mt-4"
       >
-        <FormGroup label={t('Price')} labelFor="limitPrice">
-          <Input
-            type="number"
-            step={step}
-            {...register('limitPrice', {
-              required: t('You need to provide a price'),
-              validate: {
-                min: (value) =>
-                  Number(value) > 0 ? true : t('The price cannot be negative'),
-              },
-            })}
-            id="limitPrice"
-          />
-          {errors.limitPrice?.message && (
-            <InputError intent="danger">{errors.limitPrice.message}</InputError>
-          )}
-        </FormGroup>
+        <div className="flex flex-col md:flex-row gap-4">
+          <FormGroup label={t('Price')} labelFor="limitPrice" className="grow">
+            <Input
+              type="number"
+              step={step}
+              {...register('limitPrice', {
+                required: t('You need to provide a price'),
+                validate: {
+                  min: (value) =>
+                    Number(value) > 0
+                      ? true
+                      : t('The price cannot be negative'),
+                },
+              })}
+              id="limitPrice"
+            />
+            {errors.limitPrice?.message && (
+              <InputError intent="danger">
+                {errors.limitPrice.message}
+              </InputError>
+            )}
+          </FormGroup>
+          <FormGroup label={t('Size')} labelFor="size" className="grow">
+            <Input
+              type="number"
+              step={stepSize}
+              {...register('size', {
+                required: t('You need to provide a size'),
+                validate: {
+                  min: (value) =>
+                    Number(value) > 0 ? true : t('The size cannot be negative'),
+                },
+              })}
+              id="size"
+            />
+            {errors.size?.message && (
+              <InputError intent="danger">{errors.size.message}</InputError>
+            )}
+          </FormGroup>
+        </div>
         <Button variant="primary" size="md" type="submit">
           {t('Update')}
         </Button>
diff --git a/libs/orders/src/lib/components/order-list/order-list.tsx b/libs/orders/src/lib/components/order-list/order-list.tsx
index eafcb7b8e..033de1a1e 100644
--- a/libs/orders/src/lib/components/order-list/order-list.tsx
+++ b/libs/orders/src/lib/components/order-list/order-list.tsx
@@ -136,7 +136,7 @@ export const OrderList = forwardRef<AgGridReact, OrderListProps>(
             order={editOrder}
             onSubmit={(fields) => {
               setEditOrder(null);
-              orderEdit.edit({ price: fields.limitPrice });
+              orderEdit.edit({ price: fields.limitPrice, size: fields.size });
             }}
           />
         )}
@@ -356,6 +356,7 @@ export const OrderListTable = forwardRef<AgGridReact, OrderListTableProps>(
           colId="amend"
           headerName=""
           field="status"
+          minWidth={150}
           cellRenderer={({ data, node }: VegaICellRendererParams<Order>) => {
             if (node?.rowPinned) {
               return (
diff --git a/libs/orders/src/lib/order-hooks/use-order-edit.spec.tsx b/libs/orders/src/lib/order-hooks/use-order-edit.spec.tsx
index 0b6576ef7..724956714 100644
--- a/libs/orders/src/lib/order-hooks/use-order-edit.spec.tsx
+++ b/libs/orders/src/lib/order-hooks/use-order-edit.spec.tsx
@@ -124,7 +124,7 @@ function setup(order: Order, context?: Partial<VegaWalletContextShape>) {
 }
 
 describe('useOrderEdit', () => {
-  it('should edit a correctly formatted order', async () => {
+  it('should edit a correctly formatted order if there is no size', async () => {
     const mockSendTx = jest.fn().mockReturnValue(Promise.resolve({}));
     const pubKeyObj = { publicKey: '0x123', name: 'test key 1' };
     const order = generateOrder({
@@ -154,6 +154,36 @@ describe('useOrderEdit', () => {
     });
   });
 
+  it('should edit a correctly formatted order', async () => {
+    const mockSendTx = jest.fn().mockReturnValue(Promise.resolve({}));
+    const pubKeyObj = { publicKey: '0x123', name: 'test key 1' };
+    const order = generateOrder({
+      price: '123456789',
+      market: { decimalPlaces: 2 },
+    });
+    const { result } = setup(order, {
+      sendTx: mockSendTx,
+      pubKeys: [pubKeyObj],
+      pubKey: pubKeyObj.publicKey,
+    });
+
+    act(() => {
+      result.current.edit({ price: '1234567.89', size: '20' });
+    });
+
+    expect(mockSendTx).toHaveBeenCalledWith(pubKeyObj.publicKey, {
+      orderAmendment: {
+        orderId: order.id,
+        // eslint-disable-next-line
+        marketId: order.market!.id,
+        timeInForce: order.timeInForce,
+        price: '123456789', // Decimal removed
+        sizeDelta: 1990,
+        expiresAt: undefined,
+      },
+    });
+  });
+
   it('has the correct default state', () => {
     const order = generateOrder();
     const { result } = setup(order);
diff --git a/libs/orders/src/lib/order-hooks/use-order-edit.tsx b/libs/orders/src/lib/order-hooks/use-order-edit.tsx
index ea0d4df1f..20f8e2535 100644
--- a/libs/orders/src/lib/order-hooks/use-order-edit.tsx
+++ b/libs/orders/src/lib/order-hooks/use-order-edit.tsx
@@ -5,10 +5,11 @@ import type { OrderEventFieldsFragment } from './';
 import * as Sentry from '@sentry/react';
 import type { Order } from '../components';
 import { useOrderEvent } from './use-order-event';
+import BigNumber from 'bignumber.js';
 
-// Can only edit price for now
 export interface EditOrderArgs {
   price: string;
+  size?: string;
 }
 
 export const useOrderEdit = (order: Order | null) => {
@@ -47,7 +48,13 @@ export const useOrderEdit = (order: Order | null) => {
             marketId: order.market.id,
             price: removeDecimal(args.price, order.market.decimalPlaces),
             timeInForce: order.timeInForce,
-            sizeDelta: 0,
+            sizeDelta: args.size
+              ? new BigNumber(
+                  removeDecimal(args.size, order.market.positionDecimalPlaces)
+                )
+                  .minus(order.size)
+                  .toNumber()
+              : 0,
             expiresAt: order.expiresAt
               ? toNanoSeconds(order.expiresAt) // Wallet expects timestamp in nanoseconds
               : undefined,