diff --git a/projects/editor/src/app/components/canvas/section-dynamic.component.ts b/projects/editor/src/app/components/canvas/section-dynamic.component.ts
index 93d8af2610d3987831bd0592a7d9c40a90e37438..686f737f8f0a7aee402f29718de92561e3c995e4 100644
--- a/projects/editor/src/app/components/canvas/section-dynamic.component.ts
+++ b/projects/editor/src/app/components/canvas/section-dynamic.component.ts
@@ -57,11 +57,12 @@ import { DynamicSectionHelperGridComponent } from './dynamic-section-helper-grid
                                      [gridRow]="element.position.gridRow"
                                      [gridRowRange]="element.position.gridRowRange"
                                      (elementSelected)="elementSelected.emit()"
-                                     (elementChanged)="helperGrid?.refresh()">
+                                     (elementChanged)="helperGrid.refresh()">
       </aspect-dynamic-canvas-overlay>
     </div>
   `
-})
+  })
+
 export class SectionDynamicComponent {
   @Input() section!: Section;
   @Input() sectionIndex!: number;
diff --git a/projects/editor/src/app/components/properties-panel/position-properties-tab/input-groups/dimension-field-set.component.ts b/projects/editor/src/app/components/properties-panel/position-properties-tab/input-groups/dimension-field-set.component.ts
index cfe65d38df4f4d7744c7a9bf1c5241262098d15e..9061ec32e4585514ff0f9dd01b0a9219fd07de1f 100644
--- a/projects/editor/src/app/components/properties-panel/position-properties-tab/input-groups/dimension-field-set.component.ts
+++ b/projects/editor/src/app/components/properties-panel/position-properties-tab/input-groups/dimension-field-set.component.ts
@@ -9,7 +9,7 @@ import { SelectionService } from 'editor/src/app/services/selection.service';
     <fieldset>
       <legend>Dimensionen</legend>
       <mat-checkbox *ngIf="dimensions.dynamicWidth !== undefined"
-                    [checked]="$any(dimensions?.dynamicWidth)"
+                    [checked]="$any(dimensions.dynamicWidth)"
                     (change)="updateDimensionProperty('dynamicWidth', $event.checked)">
         {{'propertiesPanel.dynamicWidth' | translate }}
       </mat-checkbox>
@@ -58,7 +58,8 @@ import { SelectionService } from 'editor/src/app/services/selection.service';
       </mat-form-field>
     </fieldset>
   `
-})
+  })
+
 export class DimensionFieldSetComponent {
   @Input() positionProperties: PositionProperties | undefined;
   @Input() dimensions!: { width?: number; height?: number; dynamicWidth?: boolean };
diff --git a/projects/player/src/app/components/section/section.component.html b/projects/player/src/app/components/section/section.component.html
index 8a6d667d286087e268fc93a0c7697daa7d7d0e32..6b23cdd3d8ba1e6681c99e6e8309072baa1778f9 100644
--- a/projects/player/src/app/components/section/section.component.html
+++ b/projects/player/src/app/components/section/section.component.html
@@ -9,7 +9,7 @@
         [style.height.px]="element.height"
         [style.left.px]="element.position.xPosition"
         [style.top.px]="element.position.yPosition"
-        [style.z-index]="element.position?.zIndex"
+        [style.z-index]="element.position.zIndex"
         [elementModel]="element"
         [pageIndex]="pageIndex">
     </aspect-element-group-selection>
@@ -41,7 +41,7 @@
         [style.grid-row-end]="element.position.gridRow ?
           element.position.gridRow + element.position.gridRowRange:
           null"
-        [style.z-index]="element.position?.zIndex"
+        [style.z-index]="element.position.zIndex"
         [elementModel]="element"
         [pageIndex]="pageIndex">
       </aspect-element-group-selection>