diff --git a/subprojects/packagefiles/clap/meson.build b/subprojects/packagefiles/clap/meson.build
index a97962af..857fa1b6 100644
--- a/subprojects/packagefiles/clap/meson.build
+++ b/subprojects/packagefiles/clap/meson.build
@@ -1,3 +1,5 @@
 project('clap', 'cpp', version : '1.1.1')
 
-clap_dep = declare_dependency(include_directories : include_directories('include'))
+# Without the `is_system` we'd get warnings about `CLAP_EXPORT` on `clap_entry`
+# not doing anything.
+clap_dep = declare_dependency(include_directories : include_directories('include', is_system : true))