--- CMakeLists.txt.orig	2023-12-23 00:45:39 UTC
+++ CMakeLists.txt
@@ -44,7 +44,7 @@ set(TOOLCHAIN_MODULES_INSTALL_DIR ${SHARE_INSTALL_DIR}
 set(MODULES_INSTALL_DIR           ${SHARE_INSTALL_DIR}/ECM/modules/)
 set(TOOLCHAIN_MODULES_INSTALL_DIR ${SHARE_INSTALL_DIR}/ECM/toolchain/)
 
-set(DOC_INSTALL_DIR ${SHARE_INSTALL_DIR}/doc/ECM
+set(DOC_INSTALL_DIR ${SHARE_INSTALL_DIR}/doc/extra-cmake-modules
     CACHE
     PATH
     "HTML and QtHelp documentation"