diff --git a/Makefile b/Makefile
index 508bf0b..f38fe34 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ endif
 		if test -z "${$(var)}"; then \
 			echo "Missing mandatory variable: $(var)"; \
 			exit 1; \
-                fi; \
+		fi; \
 	)
 
 prerequisites:
@@ -30,6 +30,7 @@ prerequisites:
 	
 prepare:
 	@- echo "\n### preparing ..."
+	@- chmod 600 secrets.mk
 	@- $(foreach host,$(DEPLOY_HOSTS), \
 		ssh $(SSH_USER)@$(host) "cd $(DEPLOY_PATH); mkdir $(DEPLOY_NAME)"; \
 	)