diff --git a/src/includes/CMakeLists.txt b/src/includes/CMakeLists.txt
index b4720c65..3d77d6ce 100644
--- a/src/includes/CMakeLists.txt
+++ b/src/includes/CMakeLists.txt
@@ -1,5 +1,7 @@
-install(FILES
-    nghttp2/asio_http2.h
-    nghttp2/asio_http2_client.h
-    nghttp2/asio_http2_server.h
-  DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/nghttp2")
+if(ENABLE_ASIO_LIB)
+  install(FILES
+      nghttp2/asio_http2.h
+      nghttp2/asio_http2_client.h
+      nghttp2/asio_http2_server.h
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/nghttp2")
+endif()