diff --git a/etc/security/limits.d/30_security-misc.conf b/etc/security/limits.d/30_security-misc.conf
index 0f0108f..52e9d78 100644
--- a/etc/security/limits.d/30_security-misc.conf
+++ b/etc/security/limits.d/30_security-misc.conf
@@ -2,5 +2,6 @@
 ## See the file COPYING for copying conditions.
 
 ## Disable coredumps.
-* hard core 0
-* soft core 0
+## `-` in the second field sets both hard and soft limits at the same time.
+## See `man 5 limits.conf`.
+* - core 0