diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73a0b10..a246a97 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,6 +50,7 @@ set(ads_INSTALL_INCLUDE
     src/ads_globals.h
     src/DockAreaTabBar.h
     src/DockAreaTitleBar.h
+	src/DockAreaTitleBar_p.h
     src/DockAreaWidget.h
     src/DockContainerWidget.h
     src/DockManager.h