diff --git a/__tests__/distributors/base-installer.test.ts b/__tests__/distributors/base-installer.test.ts
index da23c8186..5ac3a8269 100644
--- a/__tests__/distributors/base-installer.test.ts
+++ b/__tests__/distributors/base-installer.test.ts
@@ -245,7 +245,7 @@ describe('setupJava', () => {
     expect(spyCoreAddPath).toHaveBeenCalled();
     expect(spyCoreExportVariable).toHaveBeenCalled();
     expect(spyCoreExportVariable).toHaveBeenCalledWith(
-      `JAVA_HOME_${input.version}_${input.architecture}`,
+      `JAVA_HOME_${input.version}_${input.architecture.toLocaleUpperCase()}`,
       expected.path
     );
     expect(spyCoreSetOutput).toHaveBeenCalled();