diff --git a/Makefile b/Makefile
index 04e5c94..5f4deba 100644
--- a/Makefile
+++ b/Makefile
@@ -30,11 +30,21 @@ $(HOME)/rpmbuild/SOURCES/$(NAME)-%.tar.gz: .
 
 .PHONY: install
 install:
-	install -D --no-target-directory server.conf.sample $(DESTDIR)$(SYSCONFDIR)/$(NAME)/server.conf
-	install -D --target-directory=$(DESTDIR)$(SYSCONFDIR)/$(NAME) server.conf.sample
-	install -D --target-directory=$(DESTDIR)$(UNITDIR) systemd/netoik-api-server.service
-	install -D --no-target-directory bin/server $(DESTDIR)$(BINDIR)/$(NAME)-server
-	install --directory $(DESTDIR)$(VARDIR)/$(NAME)/captcha
+	install -D \
+		--no-target-directory \
+		server.conf.sample \
+		"$(DESTDIR)$(SYSCONFDIR)/$(NAME)/server.conf"
+	install -D \
+		--target-directory="$(DESTDIR)$(SYSCONFDIR)/$(NAME)" \
+		server.conf.sample
+	install -D \
+		--target-directory="$(DESTDIR)$(UNITDIR)" \
+		systemd/netoik-api-server.service
+	install -D \
+		--no-target-directory \
+		bin/server \
+		"$(DESTDIR)$(BINDIR)/$(NAME)-server"
+	install --directory "$(DESTDIR)$(VARDIR)/$(NAME)/captcha"
 
 .PHONY: check_format
 check_format: