diff --git a/app/models/answer.rb b/app/models/answer.rb
index 05f81c6c..5678c566 100644
--- a/app/models/answer.rb
+++ b/app/models/answer.rb
@@ -17,10 +17,12 @@ class Answer < ActiveRecord::Base
 
   before_destroy do
     # mark a report as deleted if it exists
-    rep = Report.where(target_id: self.id).first
-    unless rep.nil?
-      rep.deleted = true
-      rep.save
+    rep = Report.where(target_id: self.id, type: Reports::Answer)
+    rep.each do |r|
+      unless r.nil?
+        r.deleted = true
+        r.save
+      end
     end
 
     self.user.decrement! :answered_count
diff --git a/app/models/comment.rb b/app/models/comment.rb
index ca8f4087..c23070ca 100644
--- a/app/models/comment.rb
+++ b/app/models/comment.rb
@@ -14,6 +14,14 @@ class Comment < ActiveRecord::Base
   end
 
   before_destroy do
+    rep = Report.where(target_id: self.id, type: Reports::Comment)
+    rep.each do |r|
+      unless r.nil?
+        r.deleted = true
+        r.save
+      end
+    end
+
     Subscription.denotify self, answer
     user.decrement!  :commented_count
     answer.decrement! :comment_count
diff --git a/app/models/question.rb b/app/models/question.rb
index 27e33b61..1771b6bc 100644
--- a/app/models/question.rb
+++ b/app/models/question.rb
@@ -6,12 +6,14 @@ class Question < ActiveRecord::Base
   validates :content, length: { maximum: 255 }
 
   before_destroy do
-    rep = Report.where(target_id: self.id).first
-    unless rep.nil?
-      rep.deleted = true
-      rep.save
+    rep = Report.where(target_id: self.id, type: Reports::Question)
+    rep.each do |r|
+      unless r.nil?
+        r.deleted = true
+        r.save
+      end
     end
-    
+
     user.decrement! :asked_count unless self.author_is_anonymous
   end
 
diff --git a/app/models/user.rb b/app/models/user.rb
index d5b0cff1..e5da7c43 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -59,6 +59,25 @@ class User < ActiveRecord::Base
                    end unless website.blank?
   end
 
+  # when a user deleted himself, all reports relating to the user are invalid
+  before_destroy do
+    rep = Report.where(target_id: self.id, type: Reports::User)
+    rep.each do |r|
+      unless r.nil?
+        r.deleted = true
+        r.save
+      end
+    end
+
+    rep = Report.where(user_id: self.id)
+    rep.each do |r|
+      unless r.nil?
+        r.deleted = true
+        r.save
+      end
+    end
+  end
+
   def login=(login)
     @login = login
   end