diff --git a/CMakeLists.txt b/CMakeLists.txt
index 259378b..62fc14e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,7 +55,7 @@ target_sources(
   )
 target_include_directories(
   cxxopts INTERFACE
-  ${CMAKE_SOURCE_DIR}/include
+  include/
   )
 
 add_subdirectory(src)