diff --git a/app/vmselect/main.go b/app/vmselect/main.go
index bf98ce5e9d..8605444d9a 100644
--- a/app/vmselect/main.go
+++ b/app/vmselect/main.go
@@ -212,8 +212,8 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 			err := &httpserver.ErrorWithStatusCode{
 				Err: fmt.Errorf("couldn't start executing the request in %.3f seconds, since -search.maxConcurrentRequests=%d concurrent requests "+
 					"are executed. Possible solutions: to reduce query load; to add more compute resources to the server; "+
-					"to increase -search.maxQueueDuration; to increase -search.maxQueryDuration; to increase -search.maxConcurrentRequests",
-					d.Seconds(), *maxConcurrentRequests),
+					"to increase -search.maxQueueDuration=%s; to increase -search.maxQueryDuration; to increase -search.maxConcurrentRequests",
+					d.Seconds(), *maxConcurrentRequests, maxQueueDuration),
 				StatusCode: http.StatusServiceUnavailable,
 			}
 			httpserver.Errorf(w, r, "%s", err)
diff --git a/lib/vmselectapi/server.go b/lib/vmselectapi/server.go
index 6d391371bc..f824269f36 100644
--- a/lib/vmselectapi/server.go
+++ b/lib/vmselectapi/server.go
@@ -520,9 +520,9 @@ func (s *Server) processRPCWithConcurrencyLimit(ctx *vmselectRequestCtx, rpcName
 			s.concurrencyLimitTimeout.Inc()
 			return fmt.Errorf("couldn't start executing the request in %.3f seconds, since -%s=%d concurrent requests "+
 				"are already executed. Possible solutions: to reduce the query load; to add more compute resources to the server; "+
-				"to increase -%s; to increase -%s",
+				"to increase -%s=%d; to increase -%s",
 				d.Seconds(), s.limits.MaxConcurrentRequestsFlagName, s.limits.MaxConcurrentRequests,
-				s.limits.MaxQueueDurationFlagName, s.limits.MaxConcurrentRequestsFlagName)
+				s.limits.MaxQueueDurationFlagName, s.limits.MaxQueueDuration, s.limits.MaxConcurrentRequestsFlagName)
 		}
 	}
 	err := s.processRPC(ctx, rpcName)