diff --git a/appl/popper/Makefile.in b/appl/popper/Makefile.in
index 982dd7b7a..45cf7a369 100644
--- a/appl/popper/Makefile.in
+++ b/appl/popper/Makefile.in
@@ -40,7 +40,7 @@ POPPER_SOURCES = \
 	pop_last.c pop_list.c pop_log.c \
 	pop_msg.c pop_parse.c pop_pass.c pop_quit.c \
 	pop_rset.c pop_send.c pop_stat.c pop_updt.c \
-	pop_user.c pop_uidl.c pop_xover.c popper.c
+	pop_user.c pop_uidl.c pop_xover.c popper.c maildir
 
 POP_DEBUG_SOURCES = \
 	pop_debug.c
@@ -51,7 +51,7 @@ POPPER_OBJECTS = \
 	pop_last.o pop_list.o pop_log.o pop_msg.o \
 	pop_parse.o pop_pass.o pop_quit.o pop_rset.o \
 	pop_send.o pop_stat.o pop_updt.o pop_user.o \
-	pop_uidl.o pop_xover.o popper.o
+	pop_uidl.o pop_xover.o popper.o maildir.o
 
 POP_DEBUG_OBJECTS = \
 	pop_debug.o