diff --git a/include/link.h b/include/link.h
index bb931f2607..5cb7f24dc8 100644
--- a/include/link.h
+++ b/include/link.h
@@ -230,6 +230,9 @@ struct link_map
     /* Various flag words.  */
     ElfW(Word) l_feature_1;
     ElfW(Word) l_flags_1;
+
+    /* Temporarily used in `dl_close'.  */
+    unsigned int l_idx;
   };
 
 #endif /* link.h */