diff --git a/headers/compatibility/bsd/sys/link_elf.h b/headers/compatibility/bsd/sys/link_elf.h
index 6dc120e199..916caefd16 100644
--- a/headers/compatibility/bsd/sys/link_elf.h
+++ b/headers/compatibility/bsd/sys/link_elf.h
@@ -94,6 +94,8 @@ struct dl_phdr_info
 	void *dlpi_tls_data;
 };
 
+#include <sys/cdefs.h>
+
 __BEGIN_DECLS
 
 typedef int (*__dl_iterate_hdr_callback)(struct dl_phdr_info *, size_t, void *);