diff --git a/src/cfgparse-global.c b/src/cfgparse-global.c
index 0e69059..2b32497 100644
--- a/src/cfgparse-global.c
+++ b/src/cfgparse-global.c
@@ -133,6 +133,11 @@
 			goto out;
 		global.mode |= MODE_QUIET;
 	}
+	else if (!strcmp(args[0], "zero-warning")) {
+		if (alertif_too_many_args(0, file, linenum, args, &err_code))
+			goto out;
+		global.mode |= MODE_ZERO_WARNING;
+	}
 	else if (!strcmp(args[0], "tune.runqueue-depth")) {
 		if (alertif_too_many_args(1, file, linenum, args, &err_code))
 			goto out;