diff --git a/app/vmselect/promql/exec_test.go b/app/vmselect/promql/exec_test.go
index ac4d2a1b55..5074b5e079 100644
--- a/app/vmselect/promql/exec_test.go
+++ b/app/vmselect/promql/exec_test.go
@@ -3056,6 +3056,7 @@ func TestExecSuccess(t *testing.T) {
 		t.Parallel()
 		q := `sort(buckets_limit(2, (
 			alias(label_set(100, "le", "inf", "x", "y"), "metric"),
+			alias(label_set(98, "le", "300", "x", "y"), "metric"),
 			alias(label_set(52, "le", "200", "x", "y"), "metric"),
 			alias(label_set(50, "le", "120", "x", "y"), "metric"),
 			alias(label_set(20, "le", "70", "x", "y"), "metric"),
@@ -3064,14 +3065,14 @@ func TestExecSuccess(t *testing.T) {
 		)))`
 		r1 := netstorage.Result{
 			MetricName: metricNameExpected,
-			Values:     []float64{50, 50, 50, 50, 50, 50},
+			Values:     []float64{52, 52, 52, 52, 52, 52},
 			Timestamps: timestampsExpected,
 		}
 		r1.MetricName.MetricGroup = []byte("metric")
 		r1.MetricName.Tags = []storage.Tag{
 			{
 				Key:   []byte("le"),
-				Value: []byte("120"),
+				Value: []byte("200"),
 			},
 			{
 				Key:   []byte("x"),
diff --git a/app/vmselect/promql/transform.go b/app/vmselect/promql/transform.go
index 003074fba0..7fdc3ded79 100644
--- a/app/vmselect/promql/transform.go
+++ b/app/vmselect/promql/transform.go
@@ -363,8 +363,9 @@ func transformBucketsLimit(tfa *transformFuncArg) ([]*timeseries, error) {
 					xxMinIdx = i
 				}
 			}
-			if xxMinIdx+1 == len(leGroup) {
-				// Merge the `inf` bucket with the previous bucket in order to save accuracy.
+			// Merge the leGroup[xxMinIdx] bucket with the smallest adjacent bucket in order to preserve
+			// the maximum accuracy.
+			if xxMinIdx+1 == len(leGroup) || (xxMinIdx > 0 && leGroup[xxMinIdx-1].hits < leGroup[xxMinIdx+1].hits) {
 				xxMinIdx--
 			}
 			leGroup[xxMinIdx+1].hits += leGroup[xxMinIdx].hits