diff --git a/exporters/prometheus/exporter.go b/exporters/prometheus/exporter.go
index 33677326916..2c0aed18043 100644
--- a/exporters/prometheus/exporter.go
+++ b/exporters/prometheus/exporter.go
@@ -76,7 +76,7 @@ func (c *collector) Describe(ch chan<- *prometheus.Desc) {
 	if err != nil {
 		otel.Handle(err)
 	}
-	for _, metricData := range c.getMetricData(metrics, c.withoutUnits) {
+	for _, metricData := range c.getMetricData(metrics) {
 		ch <- metricData.description
 	}
 }
@@ -90,7 +90,7 @@ func (c *collector) Collect(ch chan<- prometheus.Metric) {
 
 	// TODO(#3166): convert otel resource to target_info
 	// see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/data-model.md#resource-attributes-1
-	for _, metricData := range c.getMetricData(metrics, c.withoutUnits) {
+	for _, metricData := range c.getMetricData(metrics) {
 		if metricData.valueType == prometheus.UntypedValue {
 			m, err := prometheus.NewConstHistogram(metricData.description, metricData.histogramCount, metricData.histogramSum, metricData.histogramBuckets, metricData.attributeValues...)
 			if err != nil {
@@ -123,7 +123,7 @@ type metricData struct {
 	histogramBuckets map[float64]uint64
 }
 
-func (c *collector) getMetricData(metrics metricdata.ResourceMetrics, withoutUnits bool) []*metricData {
+func (c *collector) getMetricData(metrics metricdata.ResourceMetrics) []*metricData {
 	allMetrics := make([]*metricData, 0)
 	for _, scopeMetrics := range metrics.ScopeMetrics {
 		for _, m := range scopeMetrics.Metrics {