diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 536735c..18dfedd 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -7,7 +7,7 @@ def register
   end
 
   def create
-    if User::User.find_by(email: params[:email]) != nil
+    if !User::User.find_by(email: params[:email])
       if User::User.find_by(email: params[:email]).verified == false
         user = User::User.find_by(email: params[:email])
         session[:current_user_id] = user.id
@@ -46,7 +46,7 @@ def verify_email
     if u.use_otp(params[:code]) == true
       session[:email_verified] = true
       if params[:skip_passkey] == "true"
-        u.update(verified: true)
+        u.update!(verified: true)
         session[:authenticated] = true
         redirect_to controller: "domains", action: "index"
       else
@@ -73,7 +73,7 @@ def update
       @user.verified = false
     end
 
-    @user.save
+    @user.save!
 
     redirect_to(controller: "users", action: "settings")
   end
diff --git a/app/models/user/user.rb b/app/models/user/user.rb
index df59472..91baafa 100644
--- a/app/models/user/user.rb
+++ b/app/models/user/user.rb
@@ -16,11 +16,11 @@ def mint_otp
   end
 
   def use_otp(token)
-    if begin
+    if !begin
       @hotp.verify(token.to_s, self.otp_counter.to_i)
     rescue
       nil
-    end != nil &&
+    end.nil? &&
         Time.now.to_i <= otp_last_minted + 600
 
       self.otp_last_minted = nil
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 31c6c7c..c3294ba 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -52,7 +52,7 @@
   config.force_ssl = true
 
   # Log to STDOUT by default
-  config.logger = ActiveSupport::Logger.new("#{Rails.root.join("log/production.log")}")
+  config.logger = ActiveSupport::Logger.new(Rails.root.join("log/production.log"))
     .tap { |logger| logger.formatter = ::Logger::Formatter.new }
     .then { |logger| ActiveSupport::TaggedLogging.new(logger) }