diff --git a/mk/default.mk b/mk/default.mk
index e6367509f..1bafecb88 100644
--- a/mk/default.mk
+++ b/mk/default.mk
@@ -92,7 +92,7 @@ MAKE_ORG_INSTALL = $(BATCHL) \
 MAKE_ORG_VERSION = $(BATCHL) \
 	  --eval '(load "org-compat.el")' \
 	  --eval '(load "../mk/org-fixup.el")' \
-	  --eval '(org-make-org-version "$(ORGVERSION)" "$(GITVERSION)" "$(datadir)")'
+	  --eval '(org-make-org-version "$(ORGVERSION)" "$(GITVERSION)" "'$(datadir)'")'
 
 # How to byte-compile the whole source directory
 ELCDIR	= $(BATCHL) \