diff --git a/image/system_services.sh b/image/system_services.sh
index af3f5e5da..7947ad4aa 100755
--- a/image/system_services.sh
+++ b/image/system_services.sh
@@ -21,6 +21,9 @@ mkdir /etc/service/syslog-ng
 cp /build/runit/syslog-ng /etc/service/syslog-ng/run
 mkdir -p /var/lib/syslog-ng
 cp /build/config/syslog_ng_default /etc/default/syslog-ng
+# Replace the system() source because inside Docker we
+# can't access /proc/kmsg.
+sed -i -E 's/^(\s*)system\(\);/\1unix-stream("\/dev\/log");/' /etc/syslog-ng/syslog-ng.conf
 
 ## Install logrotate.
 $minimal_apt_get_install logrotate