diff --git a/doc/manual/source/conf.py b/doc/manual/source/conf.py
index 46a0f3ba6..2d67cb02a 100644
--- a/doc/manual/source/conf.py
+++ b/doc/manual/source/conf.py
@@ -65,7 +65,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'ns-3 project'
-copyright = u'2006-2019'
+copyright = u'2006-2019, ns-3 project'
 #author = u'test'
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/doc/models/source/conf.py b/doc/models/source/conf.py
index 63294ce75..06ab3bb92 100644
--- a/doc/models/source/conf.py
+++ b/doc/models/source/conf.py
@@ -65,7 +65,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'ns-3 project'
-copyright = u'2006-2019'
+copyright = u'2006-2019, ns-3 project'
 #author = u'test'
 
 # The version info for the project you're documenting, acts as replacement for
diff --git a/doc/tutorial/source/conf.py b/doc/tutorial/source/conf.py
index 129370698..57e2cf89a 100644
--- a/doc/tutorial/source/conf.py
+++ b/doc/tutorial/source/conf.py
@@ -63,7 +63,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'ns-3 project'
-copyright = u'2006-2019'
+copyright = u'2006-2019, ns-3 project'
 #author = u'test'
 
 # The version info for the project you're documenting, acts as replacement for