diff --git a/ports/run/netperf.run b/ports/run/netperf.run
index 2a0fbbdb40..abb1e51256 100644
--- a/ports/run/netperf.run
+++ b/ports/run/netperf.run
@@ -204,9 +204,10 @@ append qemu_args " -net user -redir tcp:12865::12865 -redir tcp:49153::49153 "
 run_genode_until {.*and family AF_INET.*} 30
 set serial_id $spawn_id
 
-
+set force_ports ""
 if [is_qemu_available] {
 	set ip_addr "localhost"
+	set force_ports "-P 49153,49153"
 } else {
 	set match_string "got IP address (\[0-9\]+\.\[0-9\]+\.\[0-9\]+\.\[0-9\]+)"
 	regexp $match_string $output all ip_addr
@@ -217,7 +218,7 @@ if [is_qemu_available] {
 foreach netperf_test $netperf_tests {
 	puts "\n---------------------------- $netperf_test -----------------------"
 
-	spawn bin/netperf_host -H $ip_addr -P 1 -v 2 -t $netperf_test -c -C -- -m $packet_size -P 49153,49153
+	spawn bin/netperf_host -H $ip_addr -P 1 -v 2 -t $netperf_test -c -C -- -m $packet_size $force_ports
 	set netperf_id $spawn_id
 
 	run_genode_until "Segment" 60 $netperf_id