diff --git a/scripts/locales/en.lua b/scripts/locales/en.lua
index f08cd0a1d5..749a14885e 100644
--- a/scripts/locales/en.lua
+++ b/scripts/locales/en.lua
@@ -548,7 +548,7 @@ local lang = {
     ["host_pool_has_connected"] = "The host pool <a href=\"%{url}\">%{pool}</a> has connected to the network.",
     ["host_pool_has_disconnected"] = "The host pool <a href=\"%{url}\">%{pool}</a> has disconnected from the network.",
     ["host_remote_to_remote"] = "Remote host <a href=\"%{url}\">%{ip}</a> %{mac} has contacted a remote host. Remote-to-remote flows available from the <a href=\"%{flow_alerts_url}\">flow alerts page</a>.",
-    ["http_download_failed"] = "Throughput check failed",
+    ["http_download_failed"] = "Host %{host} %{numeric_ip} throughput check failed.",
     ["iface_alerts_dropped"] = "Interface <a href=\"%{url}\">%{iface}</a> is dropping alerts. Likely it is generating too many of them, or recipients are slow.",
     ["influxdb_dropped_points"] = "Points dropped. Could not send them to \"%{influxdb}\".",
     ["influxdb_migration_msg"] = "You have a lot of local hosts. Please consider <a href='%{url}'>moving from RRD to InfluxDB</a> for timeseries storage to improve performance.",
@@ -586,7 +586,7 @@ local lang = {
     ["shell_script_executed"] = "Shell script '%{script_exec_comm}' executed in response of an alert: '%{alert_type}'",
     ["slow_periodic_activity"] = "Periodic activity \"%{script}\" running for too long [more than %{max_duration}] or executed too late (blocked in queue).",
     ["slow_purge"] = "<a href=\"%{url}\">Hash table idle entries</a> purging on %{iface} is too slow. This could lead to high memory utilization, data accuracy loss and missing alerts. [%{idle}%% &gt %{max_idle}%%]",
-    ["speedtest_failed"] = "Speedtest execution failed",
+    ["speedtest_failed"] = "Host %{host} %{numeric_ip} speedtest execution failed.",
     ["subject_quota_exceeded"] = "Host pool <a href=\"%{url}\">%{pool}</a> exceeded %{subject} quota [%{value} &gt; %{quota}]",
     ["suspicious_dga_domain"] = "Suspicious DGA Domain [%{domain}]",
     ["syn_flood_attacker"] = "%{entity} is a SYN flooder [%{value} &gt; %{threshold} SYN/sec sent for ~3 sec]",
diff --git a/scripts/lua/modules/alert_definitions/other/alert_am_threshold_cross.lua b/scripts/lua/modules/alert_definitions/other/alert_am_threshold_cross.lua
index 2ebaf47247..32375e763f 100644
--- a/scripts/lua/modules/alert_definitions/other/alert_am_threshold_cross.lua
+++ b/scripts/lua/modules/alert_definitions/other/alert_am_threshold_cross.lua
@@ -56,7 +56,9 @@ function alert_am_threshold_cross.format(ifid, alert, alert_type_params)
    if(alert_type_params.value == 0) then -- host unreachable
       if(alert_type_params.alt_i18n) then
 	 -- The measurement may have defined a custom message via unreachable_alert_i18n
-	 msg = i18n(alert_type_params.alt_i18n) or alert_type_params.alt_i18n
+	 msg = i18n(alert_type_params.alt_i18n,
+		    {host = ip_label,
+		     numeric_ip = numeric_ip}) or alert_type_params.alt_i18n
       end
 
       -- Fallback