diff --git a/roles/matrix-jitsi/defaults/main.yml b/roles/matrix-jitsi/defaults/main.yml
index 6fa4c340..1fed1744 100644
--- a/roles/matrix-jitsi/defaults/main.yml
+++ b/roles/matrix-jitsi/defaults/main.yml
@@ -52,9 +52,12 @@ matrix_jitsi_web_container_extra_arguments: []
 matrix_jitsi_web_systemd_required_services_list: ['docker.service']
 
 matrix_jitsi_web_config_defaultLanguage: 'en'
-matrix_jitsi_web_interface_config_lang_detection: false
 matrix_jitsi_web_config_start_with_audio_muted: false
 matrix_jitsi_web_config_start_with_video_muted: false
+matrix_jitsi_web_config_testing_enableFirefoxSimulcast: false
+matrix_jitsi_web_config_testing_p2pTestMode: false
+
+matrix_jitsi_web_interface_config_lang_detection: false
 matrix_jitsi_web_interface_config_show_jitsi_watermark: true
 matrix_jitsi_web_interface_config_jitsi_watermark_link: "https://jitsi.org"
 matrix_jitsi_web_interface_config_show_brand_watermark: false
diff --git a/roles/matrix-jitsi/templates/web/config.js.j2 b/roles/matrix-jitsi/templates/web/config.js.j2
index df57ca5c..7e24d30b 100644
--- a/roles/matrix-jitsi/templates/web/config.js.j2
+++ b/roles/matrix-jitsi/templates/web/config.js.j2
@@ -56,11 +56,11 @@ var config = {
 
     testing: {
         // Enables experimental simulcast support on Firefox.
-        enableFirefoxSimulcast: false,
+        enableFirefoxSimulcast: {{ matrix_jitsi_web_config_testing_enableFirefoxSimulcast|to_json }},
 
         // P2P test mode disables automatic switching to P2P when there are 2
         // participants in the conference.
-        p2pTestMode: false
+        p2pTestMode: {{ matrix_jitsi_web_config_testing_p2pTestMode|to_json }}
 
         // Enables the test specific features consumed by jitsi-meet-torture
         // testMode: false