diff --git a/cmake/LibKMLHelper.cmake b/cmake/LibKMLHelper.cmake
index 5cc166a..3ed3079 100644
--- a/cmake/LibKMLHelper.cmake
+++ b/cmake/LibKMLHelper.cmake
@@ -1,6 +1,7 @@
 macro(build_target)
   cmake_parse_arguments(LIB  "" "NAME" "SRCS;INCS;LINKS;DEPENDS" ${ARGN} )
   add_library(${LIB_NAME} ${LIB_SRCS})
+  target_include_directories(${LIB_NAME} INTERFACE $<INSTALL_INTERFACE:include>)
 
   foreach(LIB_DEPEND ${LIB_DEPENDS})
     add_dependencies(${LIB_NAME} ${LIB_DEPEND})