diff --git a/app/controllers/proposal_controller.rb b/app/controllers/proposal_controller.rb
index 95042af5..bc969e2a 100644
--- a/app/controllers/proposal_controller.rb
+++ b/app/controllers/proposal_controller.rb
@@ -1,5 +1,6 @@
 class ProposalController < ApplicationController
   before_filter :authenticate_user!, except: [:show, :new, :create]
+  before_action :create_user_if_not_signed_in, only: [:create]
   load_resource :conference, find_by: :short_title
   load_resource :program, through: :conference, singleton: true
   load_and_authorize_resource :event, parent: false, through: :program
@@ -26,32 +27,9 @@ class ProposalController < ApplicationController
   def create
     @url = conference_program_proposal_index_path(@conference.short_title)
 
-    unless current_user
-      @user = User.new(user_params)
-      if @user.save
-        sign_in(@user)
-      else
-        flash[:error] = "Could not save user: #{@user.errors.full_messages.join(', ')}"
-        render action: 'new'
-        return
-      end
-    end
-
     params[:event].delete :user
 
-    @event = Event.new(event_params)
-    @event.program = @program
-
-    @event.event_users.new(user: current_user,
-                           event_role: 'submitter')
-    @event.event_users.new(user: current_user,
-                           event_role: 'speaker')
-
-    unless @event.save
-      flash[:error] = "Could not submit proposal: #{@event.errors.full_messages.join(', ')}"
-      render action: 'new'
-      return
-    end
+    proposal_submission
 
     ahoy.track 'Event submission', title: 'New submission'
 
@@ -146,6 +124,20 @@ class ProposalController < ApplicationController
   def user_params
     params.require(:user).permit(:email, :password, :password_confirmation, :username)
   end
+
+  def proposal_submission
+    @event = Event.new(event_params)
+    @event.program = @program
+
+    @event.event_users.new(user: current_user,
+                           event_role: 'submitter')
+    @event.event_users.new(user: current_user,
+                           event_role: 'speaker')
+
+    return unless !@event.save
+    flash[:error] = "Could not submit proposal: #{@event.errors.full_messages.join(', ')}"
+    render action: 'new'
+  end
 end
 
 # FIXME: Introduce strong_parameters pronto!
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index ce2fde95..c11c712d 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -300,4 +300,17 @@ module ApplicationHelper
   def unread_notifications(user)
     Comment.accessible_by(current_ability).find_since_last_login(user)
   end
+
+  def create_user_if_not_signed_in
+    unless current_user
+      @user = User.new(user_params)
+      if @user.save
+        sign_in(@user)
+      else
+        flash[:error] = "Could not save user: #{@user.errors.full_messages.join(', ')}"
+        render action: 'new'
+        return
+      end
+    end
+  end
 end