diff --git a/bin/named/server.c b/bin/named/server.c
index 0ff543e238..a3453d5fc2 100644
--- a/bin/named/server.c
+++ b/bin/named/server.c
@@ -3677,7 +3677,11 @@ configure_dnstap(const cfg_obj_t **maps, dns_view_t *view) {
 		}
 
 		fopt = fstrm_iothr_options_init();
-		fstrm_iothr_options_set_num_input_queues(fopt, named_g_cpus);
+		/*
+		 * Both network threads and worker threads may log dnstap data.
+		 */
+		fstrm_iothr_options_set_num_input_queues(fopt,
+							 2 * named_g_cpus);
 		fstrm_iothr_options_set_queue_model(
 			fopt, FSTRM_IOTHR_QUEUE_MODEL_MPSC);
 
diff --git a/bin/tests/system/dnstap/ns3/named.args b/bin/tests/system/dnstap/ns3/named.args
new file mode 100644
index 0000000000..b746de58fe
--- /dev/null
+++ b/bin/tests/system/dnstap/ns3/named.args
@@ -0,0 +1,2 @@
+# Using "-n 1" allows GL #1795 to be reliably reproduced
+-D dnstap-ns3 -X named.lock -m record,size,mctx -c named.conf -d 99 -g -U 4 -n 1
diff --git a/util/copyrights b/util/copyrights
index e13441fee7..6b48540278 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -413,6 +413,7 @@
 ./bin/tests/system/dnstap/README		TXT.BRIEF	2019,2020
 ./bin/tests/system/dnstap/clean.sh		SH	2015,2016,2017,2018,2019,2020
 ./bin/tests/system/dnstap/large-answer.fstrm	X	2019,2020
+./bin/tests/system/dnstap/ns3/named.args	X	2020
 ./bin/tests/system/dnstap/setup.sh		SH	2018,2019,2020
 ./bin/tests/system/dnstap/tests.sh		SH	2015,2016,2017,2018,2019,2020
 ./bin/tests/system/dnstap/ydump.py		PYTHON	2016,2017,2018,2019,2020