diff --git a/Makefile b/Makefile
index 95b14a4..cf44a10 100644
--- a/Makefile
+++ b/Makefile
@@ -13,21 +13,21 @@ all:
 .PHONY: install
 install: sysreport
 # Make destination directories if needed
-	$(shell [ ! -d $(destconf) ] && mkdir -p $(destconf))
-	$(shell [ ! -d $(destbin) ] && mkdir -p $(destbin))
-	$(shell [ ! -d $(destman) ] && mkdir -p $(destman))
+	$(shell [ ! -d "$(destconf)" ] && mkdir -p "$(destconf)")
+	$(shell [ ! -d "$(destbin)" ] && mkdir -p "$(destbin)")
+	$(shell [ ! -d "$(destman)" ] && mkdir -p "$(destman)")
 
-	install sysreport $(destbin)
+	install sysreport "$(destbin)"
 
 # Install and setup configuration file
-	install -m644 -T sysreporter.conf.sample $(destconf)/sysreporter.conf
-	@echo "export REPORTSDIR=\"$(confdir)/reports.d\"" >> $(destconf)/sysreporter.conf
-	@echo "export TEMPDIR=\"/tmp/sysreporter\"" >> $(destconf)/sysreporter.conf
+	install -m644 -T sysreporter.conf.sample "$(destconf)/sysreporter.conf"
+	@echo "export REPORTSDIR=\"$(confdir)/reports.d\"" >> "$(destconf)/sysreporter.conf"
+	@echo "export TEMPDIR=\"/tmp/sysreporter\"" >> "$(destconf)/sysreporter.conf"
 
 # Install and enable default reports
-	install -d $(destreportsdir)
-	install -m644 -D reports.d/* $(destreportsdir)
-	chmod +x $(destreportsdir)/3*
+	install -d "$(destreportsdir)"
+	install -m644 -D reports.d/* "$(destreportsdir)"
+	install -D reports.d/3* "$(destreportsdir)"
 
 # Install manpage
-	install -m644 sysreport.1 $(destman)
+	install -m644 sysreport.1 "$(destman)"