diff --git a/Makefile b/Makefile
index cfab156..85862fb 100644
--- a/Makefile
+++ b/Makefile
@@ -881,7 +881,7 @@
 	$(INSTALL_DIR) "$(DESTDIR)$(qemu_datadir)/firmware"
 	set -e; tmpf=$$(mktemp); trap 'rm -f -- "$$tmpf"' EXIT; \
 	for x in $(DESCS); do \
-		sed -e 's,@DATADIR@,$(DESTDIR)$(qemu_datadir),' \
+		sed -e 's,@DATADIR@,$(qemu_datadir),' \
 			"$(SRC_PATH)/pc-bios/descriptors/$$x" > "$$tmpf"; \
 		$(INSTALL_DATA) "$$tmpf" \
 			"$(DESTDIR)$(qemu_datadir)/firmware/$$x"; \