diff --git a/model/textparse/openmetricsparse.go b/model/textparse/openmetricsparse.go
index 3fc80b5d62..15a95a9592 100644
--- a/model/textparse/openmetricsparse.go
+++ b/model/textparse/openmetricsparse.go
@@ -113,8 +113,8 @@ func (p *OpenMetricsParser) Series() ([]byte, *int64, float64) {
 	return p.series, nil, p.val
 }
 
-// Histogram always returns (nil, nil, nil, nil) because OpenMetrics does not support
-// sparse histograms.
+// Histogram returns (nil, nil, nil, nil) for now because OpenMetrics does not
+// support sparse histograms yet.
 func (p *OpenMetricsParser) Histogram() ([]byte, *int64, *histogram.Histogram, *histogram.FloatHistogram) {
 	return nil, nil, nil, nil
 }
diff --git a/model/textparse/promparse.go b/model/textparse/promparse.go
index b137e53056..b0c963392d 100644
--- a/model/textparse/promparse.go
+++ b/model/textparse/promparse.go
@@ -168,8 +168,8 @@ func (p *PromParser) Series() ([]byte, *int64, float64) {
 	return p.series, nil, p.val
 }
 
-// Histogram always returns (nil, nil, nil, nil) because the Prometheus text format
-// does not support sparse histograms.
+// Histogram returns (nil, nil, nil, nil) for now because the Prometheus text
+// format does not support sparse histograms yet.
 func (p *PromParser) Histogram() ([]byte, *int64, *histogram.Histogram, *histogram.FloatHistogram) {
 	return nil, nil, nil, nil
 }