diff --git a/Help/manual/cmake-buildsystem.7.rst b/Help/manual/cmake-buildsystem.7.rst
index c45659079b11cfed7f78e661dc51ac5b19feb5c1..aefdb7144b79ba9822dda96ff0d1fabe22ef51c0 100644
--- a/Help/manual/cmake-buildsystem.7.rst
+++ b/Help/manual/cmake-buildsystem.7.rst
@@ -632,7 +632,7 @@ may be enabled, with an equivalent effect to:
 
 .. code-block:: cmake
 
-  set_property(TARGET tgt APPEND PROPERTY
+  set_property(TARGET tgt APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR};${CMAKE_CURRENT_BINARY_DIR}>
   )