diff --git a/taiga/projects/services/members.py b/taiga/projects/services/members.py
index 3c9d0242..f408d430 100644
--- a/taiga/projects/services/members.py
+++ b/taiga/projects/services/members.py
@@ -99,19 +99,19 @@ def check_if_project_privacity_can_be_changed(project):
     if project.is_private:
         current_memberships = project.memberships.count()
         max_memberships = project.owner.max_memberships_public_projects
-        error_members_exceeded = ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS
+        error_members_exceeded = ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS
 
         current_projects = project.owner.owned_projects.filter(is_private=False).count()
         max_projects = project.owner.max_public_projects
-        error_project_exceeded = ERROR_MAX_PRIVATE_PROJECTS
+        error_project_exceeded = ERROR_MAX_PUBLIC_PROJECTS
     else:
         current_memberships = project.memberships.count()
         max_memberships = project.owner.max_memberships_private_projects
-        error_members_exceeded = ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS
+        error_members_exceeded = ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS
 
         current_projects = project.owner.owned_projects.filter(is_private=True).count()
         max_projects = project.owner.max_private_projects
-        error_project_exceeded = ERROR_MAX_PUBLIC_PROJECTS
+        error_project_exceeded = ERROR_MAX_PRIVATE_PROJECTS
 
     if max_memberships is not None and current_memberships > max_memberships:
         return {'can_be_updated': False, 'reason': error_members_exceeded}
diff --git a/tests/integration/test_projects.py b/tests/integration/test_projects.py
index f467302b..1a6ca2a4 100644
--- a/tests/integration/test_projects.py
+++ b/tests/integration/test_projects.py
@@ -1447,7 +1447,7 @@ def test_private_project_cant_be_public_because_owner_doesnt_have_enought_slot_a
     project.owner.max_memberships_public_projects = 3
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS})
 
 
 def test_private_project_cant_be_public_because_owner_doesnt_have_enought_slot(client):
@@ -1461,7 +1461,7 @@ def test_private_project_cant_be_public_because_owner_doesnt_have_enought_slot(c
     project.owner.max_memberships_public_projects = 6
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS})
 
 
 def test_private_project_cant_be_public_because_too_much_members(client):
@@ -1475,7 +1475,7 @@ def test_private_project_cant_be_public_because_too_much_members(client):
     project.owner.max_memberships_public_projects = 3
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS})
 
 
 def test_private_project_can_be_public_because_owner_has_enought_slot_and_project_has_enought_members(client):
@@ -1543,7 +1543,7 @@ def test_public_project_cant_be_private_because_owner_doesnt_have_enought_slot_a
     project.owner.max_memberships_private_projects = 3
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS})
 
 
 def test_public_project_cant_be_private_because_owner_doesnt_have_enought_slot(client):
@@ -1557,7 +1557,7 @@ def test_public_project_cant_be_private_because_owner_doesnt_have_enought_slot(c
     project.owner.max_memberships_private_projects = 6
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS})
 
 
 def test_public_project_cant_be_private_because_too_much_members(client):
@@ -1571,7 +1571,7 @@ def test_public_project_cant_be_private_because_too_much_members(client):
     project.owner.max_memberships_private_projects = 3
 
     assert (check_if_project_privacity_can_be_changed(project) ==
-            {'can_be_updated': False, 'reason': ERROR_MAX_PUBLIC_PROJECTS_MEMBERSHIPS})
+            {'can_be_updated': False, 'reason': ERROR_MAX_PRIVATE_PROJECTS_MEMBERSHIPS})
 
 
 def test_public_project_can_be_private_because_owner_has_enought_slot_and_project_has_enought_members(client):