Use the dedicated variable for doc
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 65c1fce..8e72300 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -335,7 +341,7 @@ elseif(LINUX)
 
     # Install documentation
     install(FILES CHANGELOG.md README.md TODO COPYING AUTHORS INSTALL
-        DESTINATION "${CMAKE_INSTALL_DATADIR}/doc/socnetv"
+        DESTINATION "${CMAKE_INSTALL_DOCDIR}"
     )
 
 endif()