diff --git a/CMakeLists.txt b/CMakeLists.txt
index abde781..db7251b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@ project( BoostException LANGUAGES CXX )
 add_library( boost_exception INTERFACE )
 add_library( Boost::exception ALIAS boost_exception )
 
-target_include_directories( boost_exception PUBLIC include )
+target_include_directories( boost_exception INTERFACE include )
 
 target_link_libraries( boost_exception
     INTERFACE