diff --git a/make/defs-dev.mk b/make/defs-dev.mk
index cfc0b879..3a4048ed 100644
--- a/make/defs-dev.mk
+++ b/make/defs-dev.mk
@@ -165,7 +165,7 @@ LOGROTDIRGROUP   ?= $(CFGDIRGROUP)
 LOGROTDIRMODE    ?= $(CFGDIRMODE)
 CRONTABOWNER     ?= $(CFGOWNER)
 CRONTABGROUP     ?= $(CFGGROUP)
-CRONTABMODE      ?= 644
+CRONTABMODE      ?= 600
 CRONTABDIROWNER  ?= $(CFGDIROWNER)
 CRONTABDIRGROUP  ?= $(CFGDIROWNER)
 CRONTABDIRMODE   ?= $(CFGDIRMODE)
diff --git a/make/defs-dist.mk b/make/defs-dist.mk
index fe80929b..ce4157c7 100644
--- a/make/defs-dist.mk
+++ b/make/defs-dist.mk
@@ -166,7 +166,7 @@ LOGROTDIRGROUP   ?= $(CFGDIROWNER)
 LOGROTDIRMODE    ?= $(CFGDIRMODE)
 CRONTABOWNER     ?= $(CFGOWNER)
 CRONTABGROUP     ?= $(CFGGROUP)
-CRONTABMODE      ?= 644
+CRONTABMODE      ?= 600
 CRONTABDIROWNER  ?= $(CFGDIROWNER)
 CRONTABDIRGROUP  ?= $(CFGDIROWNER)
 CRONTABDIRMODE   ?= $(CFGDIRMODE)