diff --git a/influx2otel/metrics_telegraf_prometheus_v1.go b/influx2otel/metrics_telegraf_prometheus_v1.go
index 31152e2a..765796fb 100644
--- a/influx2otel/metrics_telegraf_prometheus_v1.go
+++ b/influx2otel/metrics_telegraf_prometheus_v1.go
@@ -49,13 +49,18 @@ func (b *MetricsBatch) inferMetricValueTypeV1(vType common.InfluxMetricValueType
 	if _, found := fields[common.MetricCounterFieldKey]; found {
 		return common.InfluxMetricValueTypeSum
 	}
+	isHistogram := true
 	for k := range fields {
-		if k == common.MetricHistogramCountFieldKey || k == common.MetricHistogramSumFieldKey || isStringNumeric(k) {
-			// We cannot reliably distinguish between histogram and summary
-			// without knowing we have all points, so here we assume histogram.
-			return common.InfluxMetricValueTypeHistogram
+		if k != common.MetricHistogramCountFieldKey && k != common.MetricHistogramSumFieldKey && k != common.AttributeStartTimeStatsd && !isStringNumeric(k) {
+			isHistogram = false
+			break
 		}
 	}
+	if isHistogram {
+		// We cannot reliably distinguish between histogram and summary
+		// without knowing we have all points, so here we assume histogram.
+		return common.InfluxMetricValueTypeHistogram
+	}
 	return common.InfluxMetricValueTypeUntyped
 }
 
@@ -274,7 +279,6 @@ func (b *MetricsBatch) convertHistogramV1(measurement string, tags map[string]st
 				explicitBounds = append(explicitBounds, explicitBound)
 				bucketCounts = append(bucketCounts, uint64(vBucketCount))
 			}
-
 		} else if k == common.AttributeStartTimeStatsd {
 		} else {
 			b.logger.Debug("skipping unrecognized histogram field", "field", k, "value", vi)
@@ -356,7 +360,6 @@ func (b *MetricsBatch) convertSummaryV1(measurement string, tags map[string]stri
 				valueAtQuantile.SetQuantile(quantile)
 				valueAtQuantile.SetValue(value)
 			}
-
 		} else if k == common.AttributeStartTimeStatsd {
 		} else {
 			b.logger.Debug("skipping unrecognized summary field", "field", k, "value", vi)
diff --git a/influx2otel/metrics_telegraf_prometheus_v1_test.go b/influx2otel/metrics_telegraf_prometheus_v1_test.go
index 7f48cae7..d8830766 100644
--- a/influx2otel/metrics_telegraf_prometheus_v1_test.go
+++ b/influx2otel/metrics_telegraf_prometheus_v1_test.go
@@ -121,6 +121,47 @@ func TestAddPoint_v1_untypedGauge(t *testing.T) {
 	assertMetricsEqual(t, expect, b.GetMetrics())
 }
 
+func TestAddPoint_v1_untyped(t *testing.T) {
+	c, err := influx2otel.NewLineProtocolToOtelMetrics(new(common.NoopLogger))
+	require.NoError(t, err)
+
+	b := c.NewBatch()
+	err = b.AddPoint("some_custom_metric",
+		map[string]string{
+			"container.name":       "42",
+			"otel.library.name":    "My Library",
+			"otel.library.version": "latest",
+		},
+		map[string]any{
+			"count":          int64(1),
+			"something_else": float64(2.3),
+		},
+		time.Unix(0, 1395066363000000123).UTC(),
+		common.InfluxMetricValueTypeUntyped)
+	require.NoError(t, err)
+
+	expect := pmetric.NewMetrics()
+	rm := expect.ResourceMetrics().AppendEmpty()
+	rm.Resource().Attributes().PutStr("container.name", "42")
+	isMetrics := rm.ScopeMetrics().AppendEmpty()
+	isMetrics.Scope().SetName("My Library")
+	isMetrics.Scope().SetVersion("latest")
+	m := isMetrics.Metrics().AppendEmpty()
+	m.SetName("some_custom_metric_count")
+	m.SetEmptyGauge()
+	dp := m.Gauge().DataPoints().AppendEmpty()
+	dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Unix(0, 1395066363000000123)))
+	dp.SetIntValue(1)
+	m = isMetrics.Metrics().AppendEmpty()
+	m.SetName("some_custom_metric_something_else")
+	m.SetEmptyGauge()
+	dp = m.Gauge().DataPoints().AppendEmpty()
+	dp.SetTimestamp(pcommon.NewTimestampFromTime(time.Unix(0, 1395066363000000123)))
+	dp.SetDoubleValue(2.3)
+
+	assertMetricsEqual(t, expect, b.GetMetrics())
+}
+
 func TestAddPoint_v1_sum(t *testing.T) {
 	c, err := influx2otel.NewLineProtocolToOtelMetrics(new(common.NoopLogger))
 	require.NoError(t, err)