diff --git a/ports/stb/portfile.cmake b/ports/stb/portfile.cmake
index 432d84604c..1c00e99db3 100644
--- a/ports/stb/portfile.cmake
+++ b/ports/stb/portfile.cmake
@@ -1,3 +1,4 @@
+#header-only library
 include(vcpkg_common_functions)
 set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/stb-e713a69f1ea6ee1e0d55725ed0731520045a5993)
 vcpkg_download_distfile(ARCHIVE