diff --git a/changelogs/unreleased/alipniagov-disable-nakayoshi-by-default.yml b/changelogs/unreleased/alipniagov-disable-nakayoshi-by-default.yml
new file mode 100644
index 0000000000000000000000000000000000000000..e767f3908398fc150f9f47d90873bd3aee1271e8
--- /dev/null
+++ b/changelogs/unreleased/alipniagov-disable-nakayoshi-by-default.yml
@@ -0,0 +1,5 @@
+---
+title: Disable nakayoshi_fork by default in examples
+merge_request: 52209
+author:
+type: other
diff --git a/config/puma.example.development.rb b/config/puma.example.development.rb
index 28c2af3acb33f9771fb2000f66ad9eb2220c2d83..1901b5a0c1c366c8483f102f940ff8178c39c3c4 100644
--- a/config/puma.example.development.rb
+++ b/config/puma.example.development.rb
@@ -86,7 +86,7 @@
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
 if defined?(nakayoshi_fork)
-  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
+  nakayoshi_fork if ENV['ENABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
 end
 
 # Use json formatter
diff --git a/config/puma.rb.example b/config/puma.rb.example
index 9fc354a8fe82f2342533baac528a1802ffcc89a0..6684919e912024535d456df4ba89736b89ca7413 100644
--- a/config/puma.rb.example
+++ b/config/puma.rb.example
@@ -76,7 +76,7 @@ end
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
 if defined?(nakayoshi_fork)
-  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
+  nakayoshi_fork if ENV['ENABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
 end
 
 # Use json formatter
diff --git a/config/puma_actioncable.example.development.rb b/config/puma_actioncable.example.development.rb
index d0da3dcd8f2df1d1d5bde06be5af73bb12b26726..a12b452384843cda5b46128cd17fe85b52ee9001 100644
--- a/config/puma_actioncable.example.development.rb
+++ b/config/puma_actioncable.example.development.rb
@@ -86,7 +86,7 @@
 
 # https://github.com/puma/puma/blob/master/5.0-Upgrade.md#nakayoshi_fork
 if defined?(nakayoshi_fork)
-  nakayoshi_fork unless ENV['DISABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
+  nakayoshi_fork if ENV['ENABLE_PUMA_NAKAYOSHI_FORK'] == 'true'
 end
 
 # Use json formatter