diff --git a/src/app/comprobantes/comprobantes.component.ts b/src/app/comprobantes/comprobantes.component.ts
index 39235bf..17a3def 100644
--- a/src/app/comprobantes/comprobantes.component.ts
+++ b/src/app/comprobantes/comprobantes.component.ts
@@ -74,13 +74,25 @@ export class ComprobantesComponent implements OnInit {
       .saveComprobantes({cabecera: this.cabecera, cuerpo: this.cuerpo})
       .subscribe(data => {
 
-        this.modal.alert('Comprobante guardado con éxito');
-        this.saveLoading = false;
-        this.router.navigateByUrl('/home');
+        this.modal.alert('Comprobante guardado con éxito').result.then( () => {
+
+          this.saveLoading = false;
+          this.router.navigateByUrl('/home');
+        });
 
       }, err => {
 
-        this.modal.alert('Algo salió mal...');
+        if (err.status == 510) {
+
+          this.modal.alert('Ya existe el comprobante').result.then(() => {
+
+            this.router.navigateByUrl('/home');
+          });
+        } else {
+
+          this.modal.alert('Algo salió mal...');
+        }
+
         this.saveLoading = false;
         console.log(err);
       });
diff --git a/src/app/modal/modal.service.ts b/src/app/modal/modal.service.ts
index cf9c6e0..3f0ac3d 100644
--- a/src/app/modal/modal.service.ts
+++ b/src/app/modal/modal.service.ts
@@ -12,6 +12,8 @@ export class ModalService {
   modalComponent: ModalAlertComponent;
 
   alert(texto: string) {
-    return this.modalService.open(ModalAlertComponent).componentInstance.textoModal = texto;
+    let modal = this.modalService.open(ModalAlertComponent)
+    modal.componentInstance.textoModal = texto;
+    return modal;
   }
 }