diff --git a/toolkit/mozapps/installer/packager.mk b/toolkit/mozapps/installer/packager.mk
index 9ec65ed1dc29..6da907a07ef3 100644
--- a/toolkit/mozapps/installer/packager.mk
+++ b/toolkit/mozapps/installer/packager.mk
@@ -101,6 +101,7 @@ _ABS_DIST = $(call core_abspath,$(DIST))
 JARLOG_DIR = $(call core_abspath,$(DEPTH)/jarlog/)
 JARLOG_DIR_AB_CD = $(JARLOG_DIR)/$(AB_CD)
 
+TAR_CREATE_FLAGS := --exclude=.mkdir.done $(TAR_CREATE_FLAGS)
 CREATE_FINAL_TAR = $(TAR) -c --owner=0 --group=0 --numeric-owner \
   --mode="go-w" --exclude=.mkdir.done -f
 UNPACK_TAR       = tar -xf-
@@ -889,7 +890,7 @@ ifeq (bundle,$(MOZ_FS_LAYOUT))
 	$(error "make install" is not supported on this platform. Use "make package" instead.)
 endif
 	$(NSINSTALL) -D $(DESTDIR)$(installdir)
-	(cd $(DIST)/$(MOZ_PKG_DIR) && tar $(TAR_CREATE_FLAGS) - .) | \
+	(cd $(DIST)/$(MOZ_PKG_DIR) && tar --exclude=precomplete $(TAR_CREATE_FLAGS) - .) | \
 	  (cd $(DESTDIR)$(installdir) && tar -xf -)
 	$(NSINSTALL) -D $(DESTDIR)$(bindir)
 	$(RM) -f $(DESTDIR)$(bindir)/$(MOZ_APP_NAME)