diff --git a/packages/isomorphic/locatorGenerators.ts b/packages/isomorphic/locatorGenerators.ts
index 942c5d1c3ceb6..416b51a14cf0f 100644
--- a/packages/isomorphic/locatorGenerators.ts
+++ b/packages/isomorphic/locatorGenerators.ts
@@ -293,7 +293,7 @@ function combineTokens(factory: LocatorFactory, tokens: string[][], maxOutputSiz
 
 function detectExact(text: string): { exact?: boolean, text: string | RegExp } {
   let exact = false;
-  const match = text.match(/^\/(.*)\/([igm]*)$/);
+  const match = text.match(/^\/(.*)\/([dgimsuvy]*)$/);
   if (match)
     return { text: new RegExp(match[1], match[2]) };
   if (text.endsWith('"')) {
diff --git a/tests/library/locator-generator.spec.ts b/tests/library/locator-generator.spec.ts
index cb3ad87158f96..175f4c8e0b110 100644
--- a/tests/library/locator-generator.spec.ts
+++ b/tests/library/locator-generator.spec.ts
@@ -113,6 +113,15 @@ it('reverse engineer locators', async ({ page }) => {
     javascript: 'getByLabel(/Last\\s+name/i)',
     python: 'get_by_label(re.compile(r"Last\\s+name", re.IGNORECASE))',
   });
+  // Only JavaScript can express these flags, other languages drop them.
+  for (const flags of ['u', 's', 'y', 'd', 'v', 'gm']) {
+    for (const [engine, method] of [['text', 'getByText'], ['label', 'getByLabel']]) {
+      const selector = `internal:${engine}=/Hello/${flags}`;
+      const locatorString = asLocator('javascript', selector);
+      expect.soft(locatorString, selector).toBe(`${method}(/Hello/${flags})`);
+      expect.soft(parseLocator('javascript', locatorString, 'data-testid'), selector).toBe(selector);
+    }
+  }
 
   expect.soft(generate(page.getByPlaceholder('hello'))).toEqual({
     csharp: 'GetByPlaceholder("hello")',