diff --git a/Source/Makefile.in b/Source/Makefile.in
index 1c55dd12d..5c97ea37f 100644
--- a/Source/Makefile.in
+++ b/Source/Makefile.in
@@ -101,6 +101,7 @@ INCLUDEFLAGS='$(INCLUDEFLAGS)' DEFS='$(DEFS)'
 # GNU Class source files
 
 GNU_MFILES = \
+Archiver.m \
 Array.m \
 Bag.m \
 BinaryCStream.m \
@@ -170,6 +171,7 @@ GNU_OBJS = \
 	$(GNU_CFILES:.c=.o)
 
 GNU_HEADERS = \
+objects/Archiver.h \
 objects/Array.h \
 objects/ArrayPrivate.h \
 objects/Bag.h \