diff --git a/package/network/services/dnsmasq/files/dnsmasq.init b/package/network/services/dnsmasq/files/dnsmasq.init
index 7747329774..92e5004261 100755
--- a/package/network/services/dnsmasq/files/dnsmasq.init
+++ b/package/network/services/dnsmasq/files/dnsmasq.init
@@ -944,7 +944,7 @@ dnsmasq_start()
 	append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
 	append_bool "$cfg" scriptarp "--script-arp"
 
-	append_bool "$cfg" filter_aaaa "--filter-aaaa"
+	append_bool "$cfg" filter_aaaa "--filter-AAAA"
 
 	append_parm "$cfg" logfacility "--log-facility"