diff --git a/packages/aws-cdk-lib/aws-codebuild/lib/compute-type.ts b/packages/aws-cdk-lib/aws-codebuild/lib/compute-type.ts
index 923b70126056f..63cce6d3f384c 100644
--- a/packages/aws-cdk-lib/aws-codebuild/lib/compute-type.ts
+++ b/packages/aws-cdk-lib/aws-codebuild/lib/compute-type.ts
@@ -5,6 +5,7 @@ export enum ComputeType {
   SMALL = 'BUILD_GENERAL1_SMALL',
   MEDIUM = 'BUILD_GENERAL1_MEDIUM',
   LARGE = 'BUILD_GENERAL1_LARGE',
+  X_LARGE = 'BUILD_GENERAL1_XLARGE',
   X2_LARGE = 'BUILD_GENERAL1_2XLARGE',
   LAMBDA_1GB = 'BUILD_LAMBDA_1GB',
   LAMBDA_2GB = 'BUILD_LAMBDA_2GB',
diff --git a/packages/aws-cdk-lib/aws-codebuild/lib/project.ts b/packages/aws-cdk-lib/aws-codebuild/lib/project.ts
index fec076b9dd0ed..1252969223e9f 100644
--- a/packages/aws-cdk-lib/aws-codebuild/lib/project.ts
+++ b/packages/aws-cdk-lib/aws-codebuild/lib/project.ts
@@ -2117,7 +2117,8 @@ export class WindowsBuildImage implements IBuildImage {
       errors.push('Windows images do not support Lambda compute types');
     }
 
-    if (buildEnvironment.computeType === ComputeType.SMALL || buildEnvironment.computeType === ComputeType.X2_LARGE) {
+    const unsupportedComputeTypes = [ComputeType.SMALL, ComputeType.X_LARGE, ComputeType.X2_LARGE];
+    if (buildEnvironment.computeType !== undefined && unsupportedComputeTypes.includes(buildEnvironment.computeType)) {
       errors.push(`Windows images do not support the '${buildEnvironment.computeType}' compute type`);
     }
     return errors;
diff --git a/packages/aws-cdk-lib/aws-codebuild/test/codebuild.test.ts b/packages/aws-cdk-lib/aws-codebuild/test/codebuild.test.ts
index 0b6f8af8556dc..7a09af0d6b5b0 100644
--- a/packages/aws-cdk-lib/aws-codebuild/test/codebuild.test.ts
+++ b/packages/aws-cdk-lib/aws-codebuild/test/codebuild.test.ts
@@ -1617,6 +1617,24 @@ test('using ComputeType.Small with a Windows image fails validation', () => {
   }).toThrow(/Windows images do not support the 'BUILD_GENERAL1_SMALL' compute type/);
 });
 
+test('using ComputeType.XLarge with a Windows image fails validation', () => {
+  const stack = new cdk.Stack();
+  const invalidEnvironment: codebuild.BuildEnvironment = {
+    buildImage: codebuild.WindowsBuildImage.WIN_SERVER_CORE_2019_BASE,
+    computeType: codebuild.ComputeType.X_LARGE,
+  };
+
+  expect(() => {
+    new codebuild.Project(stack, 'MyProject', {
+      source: codebuild.Source.s3({
+        bucket: new s3.Bucket(stack, 'MyBucket'),
+        path: 'path',
+      }),
+      environment: invalidEnvironment,
+    });
+  }).toThrow(/Windows images do not support the 'BUILD_GENERAL1_XLARGE' compute type/);
+});
+
 test('using ComputeType.X2Large with a Windows image fails validation', () => {
   const stack = new cdk.Stack();
   const invalidEnvironment: codebuild.BuildEnvironment = {