diff --git a/cmake/Modules/RepairTargets.cmake b/cmake/Modules/RepairTargets.cmake
index bc150b2..feeaed3 100644
--- a/cmake/Modules/RepairTargets.cmake
+++ b/cmake/Modules/RepairTargets.cmake
@@ -1,36 +1,37 @@
 ## Various small fixes to repair broken/unreliable cmake targets
 
 ## Boost target seems to be unreliable and might requires specific versions of
 ## cmake to work see e.g. https://stackoverflow.com/a/42124857
 ## Workaround from:
 ## https://cliutils.gitlab.io/modern-cmake/chapters/packages/Boost.html
 if(NOT TARGET Boost::boost)
   message("Setting up boost target \"Boost::boost\"")
   add_library(Boost::boost IMPORTED INTERFACE)
   set_property(TARGET Boost::boost PROPERTY
     INTERFACE_INCLUDE_DIRECTORIES ${Boost_INCLUDE_DIR})
 endif()
 if(NOT TARGET Boost::iostreams)
   message("Setting up boost target \"Boost::iostreams\"")
   add_library(Boost::iostreams IMPORTED INTERFACE)
   set_property(TARGET Boost::iostreams PROPERTY
     INTERFACE_INCLUDE_DIRECTORIES ${Boost_INCLUDE_DIR})
   set_property(TARGET Boost::iostreams PROPERTY
     INTERFACE_LINK_LIBRARIES ${Boost_LIBRARIES})
 endif()
 ## Boost is stupid: regex is implicitly required for some iostreams headers,
 ## but CMake can not know which one see https://gitlab.kitware.com/cmake/cmake/issues/18763
 ## => Create a dummy target to make everyone happy
 get_target_property(iostreams_links Boost::iostreams INTERFACE_LINK_LIBRARIES)
 if( (NOT TARGET Boost::regex)
     AND (${iostreams_links} MATCHES ".*Boost::regex.*" ))
   add_library(Boost::regex IMPORTED INTERFACE)
 endif()
 
 # target yaml-cpp might miss include directory, fixed in (release of 0.6.3)
 # https://github.com/jbeder/yaml-cpp/commit/ab5f9259a4e67d3fe0e4832bd407a9e596e2d884
 if(NOT $<TARGET_PROPERTY:yaml-cpp,INTERFACE_INCLUDE_DIRECTORIES>
    AND EXISTS ${YAML_CPP_INCLUDE_DIR} )
   # if folder doesn't exist it has to be in some standard location
-  target_include_directories(yaml-cpp INTERFACE ${YAML_CPP_INCLUDE_DIR})
+  set_property(TARGET yaml-cpp APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES
+      ${YAML_CPP_INCLUDE_DIR})
 endif()