diff -up ./sysctl.c.ori ./sysctl.c
--- ./sysctl.c.ori	2018-01-04 16:56:26.705925767 +0100
+++ ./sysctl.c	2018-01-04 16:56:40.365877248 +0100
@@ -379,7 +379,7 @@ static int WriteSetting(const char *sett
 	/* point to the value in name=value */
 	value = equals + 1;
 
-	if (!*name || !*value || name == equals) {
+	if (!*name || name == equals) {
 		xwarnx(_("malformed setting \"%s\""), setting);
 		return -2;
 	}