diff --git a/internal/util/distance/calc_distance.go b/internal/util/distance/calc_distance.go
index ca4a7bce6f..115e7a401a 100644
--- a/internal/util/distance/calc_distance.go
+++ b/internal/util/distance/calc_distance.go
@@ -26,11 +26,11 @@ const (
 	HAMMING = "HAMMING"
 	// TANIMOTO represents the tanimoto distance
 	TANIMOTO = "TANIMOTO"
-	// JACCARD
+	// JACCARD in string
 	JACCARD = "JACCARD"
-	// SUPERSTRUCTURE
+	// SUPERSTRUCTURE in string
 	SUPERSTRUCTURE = "SUPERSTRUCTURE"
-	// SUBSTRUCTURE
+	// SUBSTRUCTURE in string
 	SUBSTRUCTURE = "SUBSTRUCTURE"
 )