diff --git a/frontend/webEditor/src/diagram/di.config.ts b/frontend/webEditor/src/diagram/di.config.ts
index 358fc9fa..8430010d 100644
--- a/frontend/webEditor/src/diagram/di.config.ts
+++ b/frontend/webEditor/src/diagram/di.config.ts
@@ -22,7 +22,7 @@ import { FunctionNodeImpl, FunctionNodeView } from "./nodes/DfdFunctionNode";
 import { IONodeImpl, IONodeView } from "./nodes/DfdIONode";
 import "./style.css";
 import { DfdPositionalLabelView } from "./labels/DfdPositionalLabel";
-import { DfdNodeLabelRenderer } from "./nodes/DfdNodeLabels";
+import { DfdNodeLabelRenderer, DfdNodeLabelSizeCalculator } from "./nodes/DfdNodeLabels";
 import { FilledBackgroundLabelView } from "./labels/FilledBackgroundLabel";
 import { DfdEditLabelValidatorDecorator } from "./labels/EditLabelDecorator";
 import { DfdEditLabelValidator } from "./labels/EditLabelValidator";
@@ -77,5 +77,6 @@ export const diagramModule = new ContainerModule((bind, unbind, isBound, rebind)
         enable: [editLabelFeature],
     });
 
+    bind(DfdNodeLabelSizeCalculator).toSelf().inSingletonScope();
     bind(DfdNodeLabelRenderer).toSelf().inSingletonScope();
 });
diff --git a/frontend/webEditor/src/diagram/nodes/DfdNodeLabels.tsx b/frontend/webEditor/src/diagram/nodes/DfdNodeLabels.tsx
index fef034de..1c31a8fe 100644
--- a/frontend/webEditor/src/diagram/nodes/DfdNodeLabels.tsx
+++ b/frontend/webEditor/src/diagram/nodes/DfdNodeLabels.tsx
@@ -10,18 +10,16 @@ import { ContainsDfdLabels } from "../../labels/feature";
 import { RemoveLabelAssignmentAction } from "../../labels/assignmentCommand";
 
 @injectable()
-export class DfdNodeLabelRenderer {
+export class DfdNodeLabelSizeCalculator {
     static readonly LABEL_HEIGHT = 10;
     static readonly LABEL_SPACE_BETWEEN = 2;
-    static readonly LABEL_SPACING_HEIGHT = DfdNodeLabelRenderer.LABEL_HEIGHT + DfdNodeLabelRenderer.LABEL_SPACE_BETWEEN;
+    static readonly LABEL_SPACING_HEIGHT =
+        DfdNodeLabelSizeCalculator.LABEL_HEIGHT + DfdNodeLabelSizeCalculator.LABEL_SPACE_BETWEEN;
     static readonly LABEL_TEXT_PADDING = 8;
 
-    constructor(
-        @inject(TYPES.IActionDispatcher) private readonly actionDispatcher: IActionDispatcher,
-        @inject(LabelTypeRegistry) private readonly labelTypeRegistry: LabelTypeRegistry,
-    ) {}
+    constructor(@inject(LabelTypeRegistry) private readonly labelTypeRegistry: LabelTypeRegistry) {}
 
-    private getLabel(label: LabelAssignment): { type: LabelType; value: LabelTypeValue } | undefined {
+    protected getLabel(label: LabelAssignment): { type: LabelType; value: LabelTypeValue } | undefined {
         const labelType = this.labelTypeRegistry.getLabelType(label.labelTypeId);
         const labelTypeValue = labelType?.values.find((value) => value.id === label.labelTypeValueId);
         if (!labelType || !labelTypeValue) {
@@ -45,10 +43,20 @@ export class DfdNodeLabelRenderer {
         }
 
         const text = `${label.type.name}: ${label.value.text}`;
-        const width = calculateTextSize(text, "5pt sans-serif").width + DfdNodeLabelRenderer.LABEL_TEXT_PADDING;
+        const width = calculateTextSize(text, "5pt sans-serif").width + DfdNodeLabelSizeCalculator.LABEL_TEXT_PADDING;
 
         return [text, width];
     }
+}
+
+@injectable()
+export class DfdNodeLabelRenderer extends DfdNodeLabelSizeCalculator {
+    constructor(
+        @inject(TYPES.IActionDispatcher) private readonly actionDispatcher: IActionDispatcher,
+        @inject(LabelTypeRegistry) labelTypeRegistry: LabelTypeRegistry,
+    ) {
+        super(labelTypeRegistry);
+    }
 
     renderSingleNodeLabel(node: ContainsDfdLabels & SNodeImpl, label: LabelAssignment, x: number, y: number): VNode {
         const [text, width] = this.computeLabelContent(label);
diff --git a/frontend/webEditor/src/diagram/nodes/common.ts b/frontend/webEditor/src/diagram/nodes/common.ts
index b49ba37c..f23077b6 100644
--- a/frontend/webEditor/src/diagram/nodes/common.ts
+++ b/frontend/webEditor/src/diagram/nodes/common.ts
@@ -6,8 +6,7 @@ import { calculateTextSize } from "../../utils/TextSize";
 import { ArrowEdgeImpl } from "../edges/ArrowEdge";
 import { VNodeStyle } from "snabbdom";
 import { DfdInputPortImpl } from "../ports/DfdInputPort";
-import { inject } from "inversify";
-import { DfdNodeLabelRenderer } from "./DfdNodeLabels";
+import { DfdNodeLabelSizeCalculator } from "./DfdNodeLabels";
 import { containsDfdLabelFeature } from "../../labels/feature";
 
 export interface DfdNode extends SNode {
@@ -23,7 +22,7 @@ export abstract class DfdNodeImpl extends SNodeImpl implements WithEditableLabel
     static readonly WIDTH_PADDING = 12;
     static readonly NODE_COLOR = "var(--color-primary)";
     static readonly HIGHLIGHTED_COLOR = "var(--color-highlighted)";
-    @inject(DfdNodeLabelRenderer) private readonly dfdNodeLabelRenderer?: DfdNodeLabelRenderer;
+    dfdNodeLabelRenderer?: DfdNodeLabelSizeCalculator;
     text: string = "";
     color?: string;
     labels: LabelAssignment[] = [];
@@ -63,8 +62,8 @@ export abstract class DfdNodeImpl extends SNodeImpl implements WithEditableLabel
         if (hasLabels && !this.hideLabels) {
             return (
                 this.labelStartHeight() +
-                this.labels.length * DfdNodeLabelRenderer.LABEL_SPACING_HEIGHT +
-                DfdNodeLabelRenderer.LABEL_SPACE_BETWEEN
+                this.labels.length * DfdNodeLabelSizeCalculator.LABEL_SPACING_HEIGHT +
+                DfdNodeLabelSizeCalculator.LABEL_SPACE_BETWEEN
             );
         } else {
             return this.noLabelHeight();
diff --git a/frontend/webEditor/src/labels/feature.ts b/frontend/webEditor/src/labels/feature.ts
index 2cf25d0f..df27df4e 100644
--- a/frontend/webEditor/src/labels/feature.ts
+++ b/frontend/webEditor/src/labels/feature.ts
@@ -1,10 +1,12 @@
 import { SModelElementImpl } from "sprotty";
 import { LabelAssignment } from "./LabelType";
+import { DfdNodeLabelSizeCalculator } from "../diagram/nodes/DfdNodeLabels";
 
 export const containsDfdLabelFeature = Symbol("dfd-label-feature");
 
 export interface ContainsDfdLabels extends SModelElementImpl {
     labels: LabelAssignment[];
+    dfdNodeLabelRenderer?: DfdNodeLabelSizeCalculator;
 }
 
 export function containsDfdLabels<T extends SModelElementImpl>(element: T): element is T & ContainsDfdLabels {
diff --git a/frontend/webEditor/src/serialize/ModelFactory.ts b/frontend/webEditor/src/serialize/ModelFactory.ts
index 3947605a..a330c393 100644
--- a/frontend/webEditor/src/serialize/ModelFactory.ts
+++ b/frontend/webEditor/src/serialize/ModelFactory.ts
@@ -1,11 +1,15 @@
-import { injectable } from "inversify";
+import { inject, injectable } from "inversify";
 import { SChildElementImpl, SModelElementImpl, SModelFactory, SParentElementImpl } from "sprotty";
 import { DfdNode } from "../diagram/nodes/common";
 import { getBasicType, SLabel, SModelElement } from "sprotty-protocol";
 import { ArrowEdge } from "../diagram/edges/ArrowEdge";
+import { containsDfdLabels } from "../labels/feature";
+import { DfdNodeLabelSizeCalculator } from "../diagram/nodes/DfdNodeLabels";
 
 @injectable()
 export class DfdModelFactory extends SModelFactory {
+    @inject(DfdNodeLabelSizeCalculator) dfdNodeLabelRenderer?: DfdNodeLabelSizeCalculator;
+
     override createElement(schema: SModelElement | SModelElementImpl, parent?: SParentElementImpl): SChildElementImpl {
         if (schema instanceof SModelElementImpl) {
             return super.createElement(schema, parent);
@@ -47,6 +51,9 @@ export class DfdModelFactory extends SModelFactory {
         if (element.features === undefined) {
             element.features = new Set<symbol>();
         }
+        if (containsDfdLabels(element)) {
+            element.dfdNodeLabelRenderer = this.dfdNodeLabelRenderer;
+        }
         return element;
     }