diff --git a/projects/common/app.module.ts b/projects/common/app.module.ts
index 3d15f7257e405038a685ef7186efcdd58f6bedd0..98d352674f57f0574d927b3d80098d25a10687c8 100644
--- a/projects/common/app.module.ts
+++ b/projects/common/app.module.ts
@@ -17,6 +17,7 @@ import { MatCheckboxModule } from '@angular/material/checkbox';
 import { MatDialogModule } from '@angular/material/dialog';
 import { MatTabsModule } from '@angular/material/tabs';
 import { MatFormFieldModule } from '@angular/material/form-field';
+import { MatSnackBarModule } from '@angular/material/snack-bar';
 
 import { ButtonComponent } from './element-components/button.component';
 import { CorrectionComponent } from './element-components/compound-components/correction.component';
@@ -76,7 +77,8 @@ import { DropdownComponent } from './element-components/dropdown.component';
     RadioButtonGroupComponent,
     CheckboxComponent,
     DropdownComponent,
-    CorrectionComponent
+    CorrectionComponent,
+    MatSnackBarModule
   ]
 })
 export class SharedModule { }
diff --git a/projects/common/message.service.ts b/projects/common/message.service.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6ff6669b800c89c7399a541a13abb71b940a30fe
--- /dev/null
+++ b/projects/common/message.service.ts
@@ -0,0 +1,13 @@
+import { Injectable } from '@angular/core';
+import { MatSnackBar } from '@angular/material/snack-bar';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class MessageService {
+  constructor(private _snackBar: MatSnackBar) { }
+
+  showWarning(text: string): void {
+    this._snackBar.open(text, undefined, { duration: 2000, panelClass: 'snackbar-warning' });
+  }
+}
diff --git a/projects/editor/src/app/unit.service.ts b/projects/editor/src/app/unit.service.ts
index f8815f7d8621817e19b1979469c89d3bd2201542..0d5d8204dc3c287bd1a02d0b264035bc44b8f648 100644
--- a/projects/editor/src/app/unit.service.ts
+++ b/projects/editor/src/app/unit.service.ts
@@ -7,6 +7,7 @@ import {
 } from '../../../common/unit';
 import { FileService } from '../../../common/file.service';
 import * as UnitFactory from './model/UnitFactory';
+import { MessageService } from '../../../common/message.service';
 
 @Injectable({
   providedIn: 'root'
@@ -21,7 +22,7 @@ export class UnitService {
   pageSwitch = new Subject();
   elementUpdated = new Subject();
 
-  constructor() {
+  constructor(private messageService: MessageService) {
     this._unit = new BehaviorSubject(UnitFactory.createUnit());
     const initialPage = UnitFactory.createUnitPage();
     const initialSection = UnitFactory.createUnitPageSection();
@@ -85,8 +86,7 @@ export class UnitService {
 
   deleteSection(): void {
     if (this._unit.value.pages[this._selectedPageIndex.value].sections.length < 2) {
-      // TODO show toast
-      console.log('cant delete last section');
+      this.messageService.showWarning('cant delete last section');
     } else {
       const index = this._selectedPageSectionIndex.value;
       this._unit.value.pages[this._selectedPageIndex.value].sections.splice(index, 1);
diff --git a/projects/editor/src/styles.css b/projects/editor/src/styles.css
index d22844d299f515e7e9dfe54bf0ac7841d7faf4ac..ed26e0b07d5dc3adbfb07017f56cab7954b98f7d 100644
--- a/projects/editor/src/styles.css
+++ b/projects/editor/src/styles.css
@@ -4,3 +4,5 @@ html, body { height: 100%; }
 body {
   margin: 0;
 }
+
+.snackbar-warning {border: 3px double #ff4d4d}