diff --git a/lib/build/recipe/emailpassword/api/utils.js b/lib/build/recipe/emailpassword/api/utils.js
index b947c990e..afbca42de 100644
--- a/lib/build/recipe/emailpassword/api/utils.js
+++ b/lib/build/recipe/emailpassword/api/utils.js
@@ -67,7 +67,9 @@ async function validateFormOrThrowError(inputs, configFormFields, tenantId, user
         // and the field is not optional.
         const isValidInput =
             !!input &&
-            ((typeof input.value === "string" && input.value.length > 0) ||
+            ((typeof input.value === "string"
+                ? input.value.length > 0
+                : input.value !== null && typeof input.value !== "undefined") ||
                 (typeof input.value === "object" && Object.values(input.value).length > 0));
         if (!formField.optional && !isValidInput) {
             validationErrors.push({
diff --git a/lib/ts/recipe/emailpassword/api/utils.ts b/lib/ts/recipe/emailpassword/api/utils.ts
index b30721035..23023ae1f 100644
--- a/lib/ts/recipe/emailpassword/api/utils.ts
+++ b/lib/ts/recipe/emailpassword/api/utils.ts
@@ -87,7 +87,7 @@ function newBadRequestError(message: string) {
 async function validateFormOrThrowError(
     inputs: {
         id: string;
-        value: string | object | undefined;
+        value: any | undefined;
     }[],
     configFormFields: NormalisedFormField[],
     tenantId: string,
@@ -111,7 +111,9 @@ async function validateFormOrThrowError(
         // and the field is not optional.
         const isValidInput =
             !!input &&
-            ((typeof input.value === "string" && input.value.length > 0) ||
+            ((typeof input.value === "string"
+                ? input.value.length > 0
+                : input.value !== null && typeof input.value !== "undefined") ||
                 (typeof input.value === "object" && Object.values(input.value).length > 0));
         if (!formField.optional && !isValidInput) {
             validationErrors.push({
diff --git a/test/emailpassword/signupFeature.test.js b/test/emailpassword/signupFeature.test.js
index 371c98d30..4f337ef8b 100644
--- a/test/emailpassword/signupFeature.test.js
+++ b/test/emailpassword/signupFeature.test.js
@@ -830,6 +830,136 @@ describe(`signupFeature: ${printPath("[test/emailpassword/signupFeature.test.js]
         assert(response.user.emails[0] === "random@gmail.com");
     });
 
+    it("test valid boolean formFields with optional", async function () {
+        const connectionURI = await startST();
+        STExpress.init({
+            supertokens: {
+                connectionURI,
+            },
+            appInfo: {
+                apiDomain: "api.supertokens.io",
+                appName: "SuperTokens",
+                websiteDomain: "supertokens.io",
+            },
+            recipeList: [
+                EmailPassword.init({
+                    signUpFeature: {
+                        formFields: [
+                            {
+                                id: "autoVerify",
+                                optional: false,
+                            },
+                        ],
+                    },
+                }),
+                Session.init({ getTokenTransferMethod: () => "cookie" }),
+            ],
+        });
+        const app = express();
+
+        app.use(middleware());
+
+        app.use(errorHandler());
+
+        let response = await new Promise((resolve) =>
+            request(app)
+                .post("/auth/signup")
+                .send({
+                    formFields: [
+                        {
+                            id: "password",
+                            value: "validpass123",
+                        },
+                        {
+                            id: "email",
+                            value: "random@gmail.com",
+                        },
+                        {
+                            id: "autoVerify",
+                            value: false,
+                        },
+                    ],
+                })
+                .expect(200)
+                .end((err, res) => {
+                    if (err) {
+                        resolve(undefined);
+                    } else {
+                        resolve(JSON.parse(res.text));
+                    }
+                })
+        );
+
+        assert(response.status === "OK");
+        assert(response.user.id !== undefined);
+        assert(response.user.emails[0] === "random@gmail.com");
+    });
+
+    it("test valid int formFields with optional", async function () {
+        const connectionURI = await startST();
+        STExpress.init({
+            supertokens: {
+                connectionURI,
+            },
+            appInfo: {
+                apiDomain: "api.supertokens.io",
+                appName: "SuperTokens",
+                websiteDomain: "supertokens.io",
+            },
+            recipeList: [
+                EmailPassword.init({
+                    signUpFeature: {
+                        formFields: [
+                            {
+                                id: "intField",
+                                optional: false,
+                            },
+                        ],
+                    },
+                }),
+                Session.init({ getTokenTransferMethod: () => "cookie" }),
+            ],
+        });
+        const app = express();
+
+        app.use(middleware());
+
+        app.use(errorHandler());
+
+        let response = await new Promise((resolve) =>
+            request(app)
+                .post("/auth/signup")
+                .send({
+                    formFields: [
+                        {
+                            id: "password",
+                            value: "validpass123",
+                        },
+                        {
+                            id: "email",
+                            value: "random@gmail.com",
+                        },
+                        {
+                            id: "intField",
+                            value: 23,
+                        },
+                    ],
+                })
+                .expect(200)
+                .end((err, res) => {
+                    if (err) {
+                        resolve(undefined);
+                    } else {
+                        resolve(JSON.parse(res.text));
+                    }
+                })
+        );
+
+        assert(response.status === "OK");
+        assert(response.user.id !== undefined);
+        assert(response.user.emails[0] === "random@gmail.com");
+    });
+
     //- Bad test case without optional (something is missing, and it's not optional)
     it("test bad case input to signup without optional", async function () {
         const connectionURI = await startST();