diff --git a/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435-xxhash64/index.js b/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435-xxhash64/index.js
index 914be999c0a..fac028ae7c5 100644
--- a/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435-xxhash64/index.js
+++ b/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435-xxhash64/index.js
@@ -3,5 +3,5 @@ import legacyClasses from "./legacy/index.css";
 
 it("should have consistent hash", () => {
 	expect(classes["container-main"]).toBe(`${/* md4("./style.module.css") */ "d8ad836b5119c8e8"}-container-main`)
-	expect(legacyClasses["legacy-main"]).toBe(`${/* md4("./legacy/index.css") */ "e623bccf86c6"}-legacy-main`)
+	expect(legacyClasses["legacy-main"]).toBe(`${/* md4("./legacy/index.css") */ "_9721e623bccf86c6"}-legacy-main`)
 });
diff --git a/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435/index.js b/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435/index.js
index de15f3b57c5..316ccbc562f 100644
--- a/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435/index.js
+++ b/packages/rspack-test-tools/tests/configCases/css/rspack-issue-6435/index.js
@@ -2,6 +2,6 @@ import * as classes from "./style.module.css";
 import legacyClasses from "./legacy/index.css";
 
 it("should have consistent hash", () => {
-	expect(classes["container-main"]).toBe(`${/* md4("./style.module.css") */ "ea850e6088d2566f677"}-container-main`)
+	expect(classes["container-main"]).toBe(`${/* md4("./style.module.css") */ "_7ea850e6088d2566f677"}-container-main`)
 	expect(legacyClasses["legacy-main"]).toBe(`${/* md4("./legacy/index.css") */ "c15d43fe622e87bbf5d"}-legacy-main`)
 });
diff --git a/packages/rspack-test-tools/tests/configCases/mangle-exports/skipping-mangle-css-modules/index.js b/packages/rspack-test-tools/tests/configCases/mangle-exports/skipping-mangle-css-modules/index.js
index 3ba16e11637..114229f7e17 100644
--- a/packages/rspack-test-tools/tests/configCases/mangle-exports/skipping-mangle-css-modules/index.js
+++ b/packages/rspack-test-tools/tests/configCases/mangle-exports/skipping-mangle-css-modules/index.js
@@ -6,5 +6,5 @@ it("should not mangle css module", () => {
   // Using this to trigger a none provided export
   test.res;
 
-  expect(test.test).toBe("-ec1c834ac8cc99e-test");
+  expect(test.test).toBe("-_6ec1c834ac8cc99e-test");
 });