--- CMakeLists.txt.orig	2022-05-25 19:28:26 UTC
+++ CMakeLists.txt
@@ -203,7 +203,7 @@ endif()
 
 # install documentation
 install(DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/doc"
-        DESTINATION "${CMAKE_INSTALL_PREFIX}")
+        DESTINATION "${FREEBSD_DOCSDIR}")
 
 # -------------------------------------------------------------------------------------------------------#
 # Define distribution release target (make dist)                                                         #