diff --git a/src/language/validation/other/expressions/memberAccesses.ts b/src/language/validation/other/expressions/memberAccesses.ts
index 7cf5fc578..7a4d19066 100644
--- a/src/language/validation/other/expressions/memberAccesses.ts
+++ b/src/language/validation/other/expressions/memberAccesses.ts
@@ -1,26 +1,26 @@
-import {SafeDsServices} from "../../../safe-ds-module.js";
-import {SdsMemberAccess} from "../../../generated/ast.js";
-import {ValidationAcceptor} from "langium";
-import {UnknownType} from "../../../typing/model.js";
+import { SafeDsServices } from '../../../safe-ds-module.js';
+import { SdsMemberAccess } from '../../../generated/ast.js';
+import { ValidationAcceptor } from 'langium';
+import { UnknownType } from '../../../typing/model.js';
 
 export const CODE_MEMBER_ACCESS_MISSING_NULL_SAFETY = 'member-access/missing-null-safety';
 
 export const memberAccessMustBeNullSafeIfReceiverIsNullable =
     (services: SafeDsServices) =>
-        (node: SdsMemberAccess, accept: ValidationAcceptor): void => {
-            if (node.isNullSafe) {
-                return;
-            }
+    (node: SdsMemberAccess, accept: ValidationAcceptor): void => {
+        if (node.isNullSafe) {
+            return;
+        }
 
-            const receiverType = services.types.TypeComputer.computeType(node.receiver);
-            if (receiverType === UnknownType) {
-                return;
-            }
+        const receiverType = services.types.TypeComputer.computeType(node.receiver);
+        if (receiverType === UnknownType) {
+            return;
+        }
 
-            if (receiverType.isNullable) {
-                accept('error', "The receiver can be null so a safe access must be used.", {
-                    node,
-                    code: CODE_MEMBER_ACCESS_MISSING_NULL_SAFETY,
-                });
-            }
-        };
+        if (receiverType.isNullable) {
+            accept('error', 'The receiver can be null so a safe access must be used.', {
+                node,
+                code: CODE_MEMBER_ACCESS_MISSING_NULL_SAFETY,
+            });
+        }
+    };
diff --git a/src/language/validation/safe-ds-validator.ts b/src/language/validation/safe-ds-validator.ts
index 0fddf3313..f6d837666 100644
--- a/src/language/validation/safe-ds-validator.ts
+++ b/src/language/validation/safe-ds-validator.ts
@@ -71,7 +71,7 @@ import {
     callableTypeResultsMustNotBeAnnotated,
     lambdaParametersMustNotBeAnnotated,
 } from './other/declarations/annotationCalls.js';
-import {memberAccessMustBeNullSafeIfReceiverIsNullable} from "./other/expressions/memberAccesses.js";
+import { memberAccessMustBeNullSafeIfReceiverIsNullable } from './other/expressions/memberAccesses.js';
 
 /**
  * Register custom validation checks.
@@ -122,7 +122,7 @@ export const registerValidationChecks = function (services: SafeDsServices) {
         SdsLambda: [lambdaParametersMustNotBeAnnotated, lambdaParameterMustNotHaveConstModifier],
         SdsMemberAccess: [
             memberAccessMustBeNullSafeIfReceiverIsNullable(services),
-            memberAccessNullSafetyShouldBeNeeded(services)
+            memberAccessNullSafetyShouldBeNeeded(services),
         ],
         SdsModule: [moduleDeclarationsMustMatchFileKind, moduleWithDeclarationsMustStatePackage],
         SdsNamedType: [