diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index 62c764bb3..cf071167c 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -620,8 +620,8 @@ class AddressBookPage
     Mode m_mode;
 }
 
-AddressBookPage::AddressBookPage(Mode _mode) :
-      m_mode(_mode)
+AddressBookPage::AddressBookPage(Mode _mode)
+    : m_mode(_mode)
 ...
 ```