diff --git a/libs/temporal/tempo.cc b/libs/temporal/tempo.cc
index 99b04877a9..efbbd1c0ae 100644
--- a/libs/temporal/tempo.cc
+++ b/libs/temporal/tempo.cc
@@ -2081,7 +2081,7 @@ TempoMap::quarters_at (timepos_t const & pos) const
 		/* a bit redundant */
 		return pos.beats();
 	}
-	return quarters_at (pos);
+	return quarters_at_superclock (pos.superclocks());
 }
 
 Temporal::Beats