diff --git a/app/models/invite_redeemer.rb b/app/models/invite_redeemer.rb
index 3a3e304dab8..df748bf32bc 100644
--- a/app/models/invite_redeemer.rb
+++ b/app/models/invite_redeemer.rb
@@ -19,7 +19,7 @@ InviteRedeemer = Struct.new(:invite, :username, :name, :password, :user_custom_f
 
   # extracted from User cause it is very specific to invites
   def self.create_user_from_invite(invite, username, name, password=nil, user_custom_fields=nil)
-    user_exists = User.find_by_email(invite.email)
+    user_exists = User.where(admin: false).find_by_email(invite.email)
     return user if user_exists
 
     if username && UsernameValidator.new(username).valid_format? && User.username_available?(username)