diff --git a/app/controllers/project_activities_controller.rb b/app/controllers/project_activities_controller.rb
index 639f71209..350c8f598 100644
--- a/app/controllers/project_activities_controller.rb
+++ b/app/controllers/project_activities_controller.rb
@@ -26,9 +26,7 @@ class ProjectActivitiesController < ApplicationController
   end
 
   def check_view_permissions
-    unless can_read_project?(@project)
-      render_403
-    end
+    render_403 unless can_read_project?(@project)
   end
 
 end
diff --git a/app/controllers/project_comments_controller.rb b/app/controllers/project_comments_controller.rb
index 90f19159a..10addd62c 100644
--- a/app/controllers/project_comments_controller.rb
+++ b/app/controllers/project_comments_controller.rb
@@ -171,25 +171,23 @@ class ProjectCommentsController < ApplicationController
   end
 
   def check_view_permissions
-    unless can_read_project?(@project)
-      render_403
-    end
+    render_403 unless can_read_project?(@project)
   end
 
   def check_add_permissions
-    unless can_add_comment_to_project?(@project)
-      render_403
-    end
+    render_403 unless can_add_comment_to_project?(@project)
   end
 
   def check_edit_permissions
     @comment = ProjectComment.find_by_id(params[:id])
-    render_403 unless @comment.present? && can_update_or_delete_project_comment?(@comment)
+    render_403 unless @comment.present? &&
+                      can_update_or_delete_project_comment?(@comment)
   end
 
   def check_destroy_permissions
     @comment = ProjectComment.find_by_id(params[:id])
-    render_403 unless @comment.present? && can_update_or_delete_project_comment?(@comment)
+    render_403 unless @comment.present? &&
+                      can_update_or_delete_project_comment?(@comment)
   end
 
   def comment_params
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 0fea7561f..3a0d60ccf 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -119,8 +119,8 @@ class ProjectsController < ApplicationController
 
     # Check archive permissions if archiving/restoring
     if project_params.include? :archive
-      if (project_params[:archive] and !can_update_project?(@project)) or
-        (!project_params[:archive] and !can_restore_project?(@project))
+      if (project_params[:archive] && !can_update_project?(@project)) ||
+         (!project_params[:archive] && !can_restore_project?(@project))
         return_error = true
         is_archive = URI(request.referer).path == projects_archive_path ? "restore" : "archive"
         flash_error = t("projects.#{is_archive}.error_flash", name: @project.name)
@@ -318,9 +318,7 @@ class ProjectsController < ApplicationController
   end
 
   def check_view_permissions
-    unless can_read_project?(@project)
-      render_403
-    end
+    render_403 unless can_read_project?(@project)
   end
 
   def check_create_permissions
@@ -328,15 +326,11 @@ class ProjectsController < ApplicationController
   end
 
   def check_view_notifications_permissions
-    unless can_read_project?(@project)
-      render_403
-    end
+    render_403 unless can_read_project?(@project)
   end
 
   def check_edit_permissions
-    unless can_update_project?(@project)
-      render_403
-    end
+    render_403 unless can_update_project?(@project)
   end
 
   def check_experiment_archive_permissions
diff --git a/app/controllers/user_projects_controller.rb b/app/controllers/user_projects_controller.rb
index 83d70cd7a..17b189a34 100644
--- a/app/controllers/user_projects_controller.rb
+++ b/app/controllers/user_projects_controller.rb
@@ -181,38 +181,26 @@ class UserProjectsController < ApplicationController
   end
 
   def check_view_tab_permissions
-    unless can_read_project?(@project)
-      render_403
-    end
+    render_403 unless can_read_project?(@project)
   end
 
   def check_view_permissions
-    unless can_update_project?(@project)
-      render_403
-    end
+    render_403 unless can_update_project?(@project)
   end
 
   def check_create_permissions
-    unless can_update_project?(@project)
-      render_403
-    end
+    render_403 unless can_update_project?(@project)
   end
 
   def check_update_permisisons
-    # TODO improve permissions for changing your role on project
-    unless params[:id] != current_user.id
-      render_403
-    end
+    # TODO: improve permissions for changing your role on project
+    render_403 unless params[:id] != current_user.id
   end
 
   def check_delete_permisisons
-    # TODO improve permissions for remove yourself from project
-    unless params[:id] != current_user.id
-      render_403
-    end
-    unless can_update_project?(@project)
-      render_403
-    end
+    # TODO: improve permissions for remove yourself from project
+    render_403 unless params[:id] != current_user.id
+    render_403 unless can_update_project?(@project)
   end
 
   def init_gui