diff --git a/camlibs/ptp2/Makefile-files b/camlibs/ptp2/Makefile-files
index 021623a6b..2c5b8bce0 100644
--- a/camlibs/ptp2/Makefile-files
+++ b/camlibs/ptp2/Makefile-files
@@ -8,7 +8,8 @@ ptp2_la_SOURCES = \
 	ptp2/ptp.c ptp2/ptp.h \
 	ptp2/library.c ptp2/usb.c ptp2/ptp-bugs.h \
 	ptp2/ptp-private.h ptp2/ptpip.c ptp2/config.c \
-	ptp2/music-players.h ptp2/device-flags.h
+	ptp2/music-players.h ptp2/device-flags.h \
+	ptp2/olympus-wrap.c ptp2/olympus-wrap.h
 ptp2_la_LDFLAGS = $(camlib_ldflags)
 ptp2_la_DEPENDENCIES = $(camlib_dependencies)
 ptp2_la_LIBADD = $(camlib_libadd) $(LTLIBICONV)