diff --git a/app/services/users/apply_professional_auth_service.rb b/app/services/users/apply_professional_auth_service.rb
index c64c07cdd..c94481890 100644
--- a/app/services/users/apply_professional_auth_service.rb
+++ b/app/services/users/apply_professional_auth_service.rb
@@ -19,7 +19,7 @@ class Users::ApplyProfessionalAuthService < ApplicationService
     extension.department_id = params[:department_id]
     extension.identity      = params[:identity]
 
-    user.professional_certification = extension.identity != 0
+    user.professional_certification = params[:identity] != "teacher"
 
     extra = params[:extra].to_s.strip.presence
     if extension.identity.to_s == 'student'