diff --git a/app/vmselect/promql/active_queries.go b/app/vmselect/promql/active_queries.go
index d66058e53..2ef261b49 100644
--- a/app/vmselect/promql/active_queries.go
+++ b/app/vmselect/promql/active_queries.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"sort"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -23,8 +24,12 @@ func ActiveQueriesHandler(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprintf(w, `{"status":"ok","data":[`)
 	for i, aqe := range aqes {
 		d := now.Sub(aqe.startTime)
+		addr := aqe.quotedRemoteAddr
+		if n := strings.IndexByte(aqe.quotedRemoteAddr, ','); n != -1 {
+			addr = aqe.quotedRemoteAddr[:n]
+		}
 		fmt.Fprintf(w, `{"duration":"%.3fs","id":"%016X","remote_addr":%s,"query":%q,"start":%d,"end":%d,"step":%d}`,
-			d.Seconds(), aqe.qid, aqe.quotedRemoteAddr, aqe.q, aqe.start, aqe.end, aqe.step)
+			d.Seconds(), aqe.qid, addr, aqe.q, aqe.start, aqe.end, aqe.step)
 		if i+1 < len(aqes) {
 			fmt.Fprintf(w, `,`)
 		}
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index ea6aa1d31..1bed6f8f4 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -44,6 +44,7 @@ The following `tip` changes can be tested by building VictoriaMetrics components
 * BUGFIX: [vmalert](https://docs.victoriametrics.com/vmalert.html): properly set `vmalert_config_last_reload_successful` value on configuration updates or rollbacks. The bug was introduced in [v1.92.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.92.0) in [this PR](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4543).
 * BUGFIX: [vmalert](https://docs.victoriametrics.com/vmalert.html): fix `vmalert_remotewrite_send_duration_seconds_total` value, before it didn't count in the real time spending on remote write requests. See [this pr](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4801) for details.
 * BUGFIX: [vmbackupmanager](https://docs.victoriametrics.com/vmbackupmanager.html): fix panic when creating a backup to a local filesystem on Windows. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4704).
+* BUGFIX: [vmui](https://docs.victoriametrics.com/#vmui): fix the response of active queries to valid JSON. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4782).
 
 
 ## [v1.92.1](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.92.1)