diff --git a/CMakeLists.txt b/CMakeLists.txt
index dd601bc..8e6e135 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,7 +86,8 @@
               "${CMAKE_CURRENT_BINARY_DIR}/ParallelSTLConfigVersion.cmake"
         DESTINATION lib/cmake/ParallelSTL)
 install(DIRECTORY include/
-        DESTINATION include)
+        DESTINATION include
+        PATTERN "*.in" EXCLUDE)
 install(FILES "${PSTL_CONFIG_SITE_PATH}"
         DESTINATION include)