diff --git a/patterns/vsf-register-step-1.html b/patterns/vsf-register-step-1.html
index 715ec44..e0f9ef4 100644
--- a/patterns/vsf-register-step-1.html
+++ b/patterns/vsf-register-step-1.html
@@ -160,12 +160,12 @@
       }
 
       const updateRegisterButtonState = () => {
-        const hasTextInput = Array.from(formCard.querySelectorAll('input[type="email"], input[type="password"]'))
-          .some((field) => field.value.trim().length > 0);
+        const requiredFields = Array.from(formCard.querySelectorAll('input[type="email"], input[type="password"]'));
+        const allFieldsFilled = requiredFields.every((field) => field.value.trim().length > 0);
 
-        registerButton.disabled = !hasTextInput;
-        registerButton.setAttribute('aria-disabled', String(!hasTextInput));
-        registerButton.classList.toggle('sg-button--process-inactive', !hasTextInput);
+        registerButton.disabled = !allFieldsFilled;
+        registerButton.setAttribute('aria-disabled', String(!allFieldsFilled));
+        registerButton.classList.toggle('sg-button--process-inactive', !allFieldsFilled);
       };
 
       formCard.querySelectorAll('input[type="email"], input[type="password"]').forEach((field) => {