DOCUMENTATION_INCLUDES = \
-I $(top-src-dir)/Documentation/user \
-I $(top-build-dir)/Documentation/user/$(outdir)
-DOCUMENTATION_INCLUDES += $(foreach lang, $(LANGS), -I $(top-build-dir)/Documentation/$(lang)/user/$(outdir))
+DOCUMENTATION_INCLUDES += $(foreach lang,$(LANGS), -I $(top-build-dir)/Documentation/$(lang)/user/$(outdir))
LILYPOND_BOOK_INCLUDES += $(DOCUMENTATION_INCLUDES)
MAKEINFO_FLAGS += --force --enable-encoding -D 'version $(TOPLEVEL_VERSION)' $(DOCUMENTATION_INCLUDES)