diff --git a/Makefile b/Makefile
index 4363338..0775660 100644
--- a/Makefile
+++ b/Makefile
@@ -6,10 +6,11 @@ VERSION = $(shell git tag | tail -n 1)
 TAG = $(NAME)-$(VERSION)
 
 build: man/dex.1
+	mkdir -p build
 
 man/dex.1: man/dex.rst
 	@echo building the manpage in man/
-	@sphinx-build -b man -D version=$(TAG) -E man man
+	@sphinx-build -b man -D version=$(TAG) -E man build/man
 
 install: dex man/dex.1 README.rst LICENSE
 	@echo installing executable file to $(DESTDIR)$(PREFIX)/bin
@@ -20,7 +21,7 @@ install: dex man/dex.1 README.rst LICENSE
 	@install -m 0644 -t $(DESTDIR)$(DOCPREFIX)/ README.rst LICENSE
 	@echo installing manual page to $(DESTDIR)$(MANPREFIX)/man1
 	@mkdir -p $(DESTDIR)$(MANPREFIX)/man1
-	@install -m 0644 man/dex.1 $(DESTDIR)$(MANPREFIX)/man1/$(NAME).1
+	@install -m 0644 build/man/dex.1 $(DESTDIR)$(MANPREFIX)/man1/$(NAME).1
 
 tgz: source