diff --git a/app/models/project_comment.rb b/app/models/project_comment.rb
index 2b2b6b847..bf9afbb9f 100644
--- a/app/models/project_comment.rb
+++ b/app/models/project_comment.rb
@@ -1,5 +1,6 @@
 class ProjectComment < Comment
-  belongs_to :project, foreign_key: :associated_id
+  belongs_to :project, foreign_key: :associated_id,
+             inverse_of: :project_comments
 
   validates :project, presence: true
 end
diff --git a/app/models/result_comment.rb b/app/models/result_comment.rb
index e00fa6fd2..d1a398cdd 100644
--- a/app/models/result_comment.rb
+++ b/app/models/result_comment.rb
@@ -1,5 +1,5 @@
 class ResultComment < Comment
-  belongs_to :result, foreign_key: :associated_id
+  belongs_to :result, foreign_key: :associated_id, inverse_of: :result_comments
 
   validates :result, presence: true
 end
diff --git a/app/models/step_comment.rb b/app/models/step_comment.rb
index 528d7b68c..176c6e58e 100644
--- a/app/models/step_comment.rb
+++ b/app/models/step_comment.rb
@@ -1,5 +1,5 @@
 class StepComment < Comment
-  belongs_to :step, foreign_key: :associated_id
+  belongs_to :step, foreign_key: :associated_id, inverse_of: :step_comments
 
   validates :step, presence: true
 end
diff --git a/app/models/task_comment.rb b/app/models/task_comment.rb
index 9ba2f92d3..2c45cb458 100644
--- a/app/models/task_comment.rb
+++ b/app/models/task_comment.rb
@@ -1,5 +1,5 @@
 class TaskComment < Comment
-  belongs_to :my_module, foreign_key: :associated_id
+  belongs_to :my_module, foreign_key: :associated_id, inverse_of: :task_comments
 
   validates :my_module, presence: true
 end