diff --git a/03_building_and_packaging/cpack_slides.md b/03_building_and_packaging/cpack_slides.md
index 0b4f5a8b..f74169a0 100644
--- a/03_building_and_packaging/cpack_slides.md
+++ b/03_building_and_packaging/cpack_slides.md
@@ -79,7 +79,7 @@ prefix/
           ${CMAKE_CURRENT_SOURCE_DIR}/includedir
       PUBLIC
           # where top-level project will look for the library's public headers
-          $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/includedir>
+          $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
           # where external projects will look for the library's public headers
           $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/includedir>
   )