diff --git a/app/controllers/admin/call_for_papers_controller.rb b/app/controllers/admin/call_for_papers_controller.rb
index 4e4e3e13..139c1a74 100644
--- a/app/controllers/admin/call_for_papers_controller.rb
+++ b/app/controllers/admin/call_for_papers_controller.rb
@@ -46,7 +46,7 @@ module Admin
       if @call_for_paper.destroy
         redirect_to admin_conference_call_for_paper_path, notice: 'Call for Papers was successfully deleted.'
       else
-        redirect_to admin_conference_call_for_paper_path, alert: 'A error prohibited this Call for Papers from being destroyed: '\
+        redirect_to admin_conference_call_for_paper_path, alert: 'An error prohibited this Call for Papers from being destroyed: '\
         "#{@call_for_paper.errors.full_messages.join('. ')}."
       end
     end
diff --git a/app/controllers/admin/registration_periods_controller.rb b/app/controllers/admin/registration_periods_controller.rb
index 05cdf705..f8c723e4 100644
--- a/app/controllers/admin/registration_periods_controller.rb
+++ b/app/controllers/admin/registration_periods_controller.rb
@@ -16,7 +16,7 @@ module Admin
         redirect_to admin_conference_registration_period_path(@conference.short_title),
                     notice: 'Registration Period successfully updated.'
       else
-        flash[:alert] = "A error prohibited the Registration Period from being saved: #{@registration_period.errors.full_messages.join('. ')}."
+        flash[:alert] = "An error prohibited the Registration Period from being saved: #{@registration_period.errors.full_messages.join('. ')}."
         render :new
       end
     end
@@ -36,7 +36,7 @@ module Admin
         redirect_to admin_conference_registration_period_path(@conference.short_title),
                     notice: 'Registration Period successfully updated.'
       else
-        flash[:alert] = 'A error prohibited the Registration Period from being saved: ' \
+        flash[:alert] = 'An error prohibited the Registration Period from being saved: ' \
         "#{@registration_period.errors.full_messages.join('. ')}."
         render :edit
       end
diff --git a/app/controllers/admin/registrations_controller.rb b/app/controllers/admin/registrations_controller.rb
index 2d516cd4..55ecdcd5 100644
--- a/app/controllers/admin/registrations_controller.rb
+++ b/app/controllers/admin/registrations_controller.rb
@@ -19,7 +19,7 @@ module Admin
         redirect_to admin_conference_registrations_path(@conference.short_title),
                     notice: 'Successfully updated registration!'
       else
-        flash[:alert] = "A error prohibited the Registration for #{@conference.title}: "\
+        flash[:alert] = "An error prohibited the Registration for #{@conference.title}: "\
                         "#{@registration.errors.full_messages.join('. ')}."
         render :edit
       end
diff --git a/app/controllers/admin/splashpages_controller.rb b/app/controllers/admin/splashpages_controller.rb
index fe06ae2c..7359cf60 100644
--- a/app/controllers/admin/splashpages_controller.rb
+++ b/app/controllers/admin/splashpages_controller.rb
@@ -35,7 +35,7 @@ module Admin
       if @splashpage.destroy
         redirect_to admin_conference_splashpage_path, notice: 'Splashpage was successfully destroyed.'
       else
-        redirect_to admin_conference_splashpage_path, alert: 'A error prohibited this Splashpage from being destroyed: '\
+        redirect_to admin_conference_splashpage_path, alert: 'An error prohibited this Splashpage from being destroyed: '\
         "#{@splashpage.errors.full_messages.join('. ')}."
       end
     end
diff --git a/app/controllers/admin/venues_controller.rb b/app/controllers/admin/venues_controller.rb
index 9bb8e9b0..98ccd708 100644
--- a/app/controllers/admin/venues_controller.rb
+++ b/app/controllers/admin/venues_controller.rb
@@ -36,7 +36,7 @@ module Admin
       if @venue.destroy
         redirect_to admin_conference_venue_path, notice: 'Venue was successfully deleted.'
       else
-        redirect_to admin_conference_venue_path, alert: 'A error prohibited this Venue from being destroyed: '\
+        redirect_to admin_conference_venue_path, alert: 'An error prohibited this Venue from being destroyed: '\
         "#{@venue.errors.full_messages.join('. ')}."
       end
     end
diff --git a/app/controllers/conference_registrations_controller.rb b/app/controllers/conference_registrations_controller.rb
index 52331eab..d750d405 100644
--- a/app/controllers/conference_registrations_controller.rb
+++ b/app/controllers/conference_registrations_controller.rb
@@ -34,7 +34,7 @@ class ConferenceRegistrationsController < ApplicationController
                      notice: 'You are now registered and will be receiving E-Mail notifications.'
       end
     else
-      flash[:alert] = "A error prohibited the registration for #{@conference.title}: "\
+      flash[:alert] = "An error prohibited the registration for #{@conference.title}: "\
                         "#{@registration.errors.full_messages.join('. ')}."
       render :new
     end
@@ -45,7 +45,7 @@ class ConferenceRegistrationsController < ApplicationController
       redirect_to  conference_conference_registrations_path(@conference.short_title),
                    notice: 'Registration was successfully updated.'
     else
-      flash[:alert] = "A error prohibited the registration for #{@conference.title}: "\
+      flash[:alert] = "An error prohibited the registration for #{@conference.title}: "\
                         "#{@registration.errors.full_messages.join('. ')}."
       render :edit
     end
@@ -57,7 +57,7 @@ class ConferenceRegistrationsController < ApplicationController
                   notice: "You are not registered for #{@conference.title} anymore!"
     else
       redirect_to root_path,
-                  alert: "A error prohibited deleting the registration for #{@conference.title}: "\
+                  alert: "An error prohibited deleting the registration for #{@conference.title}: "\
                   "#{@registration.errors.full_messages.join('. ')}."
     end
   end
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 3975c9d4..41041d8e 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -16,7 +16,7 @@ class UsersController < ApplicationController
     if @user.update(user_params)
       redirect_to @user, notice: 'User was successfully updated.'
     else
-      flash[:error] = "A error prohibited your Profile from being saved: #{@user.errors.full_messages.join('. ')}."
+      flash[:error] = "An error prohibited your Profile from being saved: #{@user.errors.full_messages.join('. ')}."
       render :edit
     end
   end