1 files changed, 3 insertions, 1 deletions

diff --git a/include/unarchive.h b/include/unarchive.h
index 0e380db08..5b71d3e62 100644
--- a/include/unarchive.h
+++ b/include/unarchive.h
@@ -47,11 +47,13 @@ typedef struct archive_handle_t {
         /* Process the data component, e.g. extract to filesystem */
         void FAST_FUNC (*action_data)(struct archive_handle_t *);
 
+#if ENABLE_DPKG || ENABLE_DPKG_DEB
+        /* "subarchive" is used only by dpkg[-deb] applets */
         /* How to process any sub archive, e.g. get_header_tar_gz */
         char FAST_FUNC (*action_data_subarchive)(struct archive_handle_t *);
-
         /* Contains the handle to a sub archive */
         struct archive_handle_t *sub_archive;
+#endif
 
         /* The raw stream as read from disk or stdin */
         int src_fd;