diff --git a/packages/fabric/validations/string/sanitize-string.test.ts b/packages/fabric/validations/string/sanitize-string.test.ts
index a023af4..4a9bcd6 100644
--- a/packages/fabric/validations/string/sanitize-string.test.ts
+++ b/packages/fabric/validations/string/sanitize-string.test.ts
@@ -17,13 +17,13 @@ describe("Sanitize String", () => {
   test("Given a number value it should convert it to a string", () => {
     const sanitized = parseAndSanitizeString(123);
 
-    expect(sanitized).toBe("123");
+    expect(sanitized).toBe(undefined);
   });
 
   test("Given a boolean value it should convert it to a string", () => {
     const sanitized = parseAndSanitizeString(true);
 
-    expect(sanitized).toBe("true");
+    expect(sanitized).toBe(undefined);
   });
 
   test("Given a null value it should return null", () => {
diff --git a/packages/fabric/validations/string/sanitize-string.ts b/packages/fabric/validations/string/sanitize-string.ts
index f3ec9f6..9afc9ce 100644
--- a/packages/fabric/validations/string/sanitize-string.ts
+++ b/packages/fabric/validations/string/sanitize-string.ts
@@ -7,8 +7,8 @@ import { isNullish } from "../nullish/is-nullish.ts";
 export function parseAndSanitizeString(
   value: unknown,
 ): string | undefined {
-  if (isNullish(value)) return undefined;
-  return stripLow((String(value)).trim());
+  if (isNullish(value) || typeof value != "string") return undefined;
+  return stripLow(value).trim();
 }
 
 // deno-lint-ignore no-control-regex