diff --git a/Makefile b/Makefile
index bced1fc..eccf025 100644
--- a/Makefile
+++ b/Makefile
@@ -1,81 +1,81 @@
 # vim: set noexpandtab:
 
 ANSIBLE = ansible-playbook
 SKIP_TAGS = --skip-tags "init,common"
 PROD_BOOK = main_prod.yml
 TEST_BOOK = main_test.yml
 
 status:
 	nova list
 
 # Everything
 
 init:
-	$(ANSIBLE) ${PROD_BOOK}
+	$(ANSIBLE) $(PROD_BOOK)
 
 test-init:
-	$(ANSIBLE) ${TEST_BOOK}
+	$(ANSIBLE) $(TEST_BOOK)
 
 up:
-	$(ANSIBLE) ${PROD_BOOK} $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) $(SKIP_TAGS)
 
 test-up:
-	$(ANSIBLE) ${TEST_BOOK} $(SKIP_TAGS)
+	$(ANSIBLE) $(TEST_BOOK) $(SKIP_TAGS)
 
 restart:
 	$(ANSIBLE) restart.yml
 
 reboot:
 	$(ANSIBLE) reboot.yml
 
 stop:
 	$(ANSIBLE) stop.yml
 
 # Specific
 
 app:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-app $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-app $(SKIP_TAGS)
 
 lbs:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-lbs $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-lbs $(SKIP_TAGS)
 
 monit:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-monit $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-monit $(SKIP_TAGS)
 
 backup:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-backup $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-backup $(SKIP_TAGS)
 
 dbs:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-dbs $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-dbs $(SKIP_TAGS)
 
 ci:
-	$(ANSIBLE) ${PROD_BOOK} --tags jenkins $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags jenkins $(SKIP_TAGS)
 
 ci-slave:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-ci-slave $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-ci-slave $(SKIP_TAGS)
 
 shib:
-	$(ANSIBLE) ${PROD_BOOK} --tags conf-shib $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags conf-shib $(SKIP_TAGS)
 
 gluster:
-	$(ANSIBLE) ${PROD_BOOK} --tags gluster $(SKIP_TAGS)
+	$(ANSIBLE) $(PROD_BOOK) --tags gluster $(SKIP_TAGS)
 
 common:
-	$(ANSIBLE) ${PROD_BOOK} --tags common --skip-tags init
+	$(ANSIBLE) $(PROD_BOOK) --tags common --skip-tags init
 
 # Utils
 
 update-phab:
 	$(ANSIBLE) update_phab.yml
 
 security:
 	$(ANSIBLE) security-update.yml
 
 arbitrator:
 	$(ANSIBLE) arbitrator.yml
 
 test:
 	$(ANSIBLE) test.yml
 
 clean:
 	$(ANSIBLE) cleanup.yml