diff --git a/exporters/prometheus/exporter.go b/exporters/prometheus/exporter.go
index 6d0d99bc4a3..1ac46eb5e44 100644
--- a/exporters/prometheus/exporter.go
+++ b/exporters/prometheus/exporter.go
@@ -390,11 +390,11 @@ func validateMetrics(name, description string, metricType *dto.MetricType, mfs m
 		if emf.GetType() == dto.MetricType_HISTOGRAM || *metricType == dto.MetricType_HISTOGRAM {
 			return false, ""
 		}
-		otel.Handle(fmt.Errorf("The description '%s' of instrument '%s' conflicts with existing description '%s', override with existing one.", description, name, emf.GetHelp()))
+		otel.Handle(fmt.Errorf("the description '%s' of instrument '%s' conflicts with existing description '%s', override with existing one", description, name, emf.GetHelp()))
 		return false, emf.GetHelp()
 	}
 	if emf.GetType() != *metricType {
-		otel.Handle(fmt.Errorf("The type '%s' of instrument '%s' conflicts with existing type '%s', drop the new one. Please use a view that selects this instrument, and rename to a different name.", *metricType, name, emf.GetType()))
+		otel.Handle(fmt.Errorf("the type '%s' of instrument '%s' conflicts with existing type '%s', drop the new one. Please use a view that selects this instrument, and rename to a different name", *metricType, name, emf.GetType()))
 		return true, ""
 	}
 	return false, ""