diff --git a/src/operations/operationList.component.ts b/src/operations/operationList.component.ts
index 46aa328..ba8f151 100644
--- a/src/operations/operationList.component.ts
+++ b/src/operations/operationList.component.ts
@@ -97,7 +97,9 @@ export class OperationListComponent implements OnInit {
     operation.account_id = this.account.id;
 
     // FIXME Alexis Lahouze 2017-06-15 i18n
-    const modal = this.ngbModal.open(OperationEditModalComponent);
+    const modal = this.ngbModal.open(OperationEditModalComponent, {
+      size: 'lg'
+    });
 
     modal.componentInstance.operation = operation;
 
diff --git a/src/operations/operationRow.component.ts b/src/operations/operationRow.component.ts
index 317e15b..0d9db50 100644
--- a/src/operations/operationRow.component.ts
+++ b/src/operations/operationRow.component.ts
@@ -139,7 +139,9 @@ export class OperationRowComponent {
 
   modify(operation) {
     // FIXME Alexis Lahouze 2017-06-15 i18n
-    const modal = this.ngbModal.open(OperationEditModalComponent);
+    const modal = this.ngbModal.open(OperationEditModalComponent, {
+      size: 'lg'
+    });
 
     modal.componentInstance.operation = operation;