diff --git a/libexec/rtld-elf/rtld.h b/libexec/rtld-elf/rtld.h
index 72a632e912e6..f151db0d1c7b 100644
--- a/libexec/rtld-elf/rtld.h
+++ b/libexec/rtld-elf/rtld.h
@@ -264,6 +264,7 @@ typedef struct Struct_Obj_Entry {
     bool valid_hash_sysv : 1;	/* A valid System V hash hash tag is available */
     bool valid_hash_gnu : 1;	/* A valid GNU hash tag is available */
     bool dlopened : 1;		/* dlopen()-ed (vs. load statically) */
+    bool writable_dynamic : 1;	/* PT_DYNAMIC is writable */
 
     struct link_map linkmap;	/* For GDB and dlinfo() */
     Objlist dldags;		/* Object belongs to these dlopened DAGs (%) */