diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc
index 27eae35ecd..a6304f29f6 100644
--- a/libs/ardour/tempo.cc
+++ b/libs/ardour/tempo.cc
@@ -2454,6 +2454,12 @@ TempoMap::gui_move_meter (MeterSection* ms, const framepos_t&  frame)
 		}
 	}
 
+	Metrics::const_iterator d = future_map.begin();
+	while (d != future_map.end()) {
+		delete (*d);
+		++d;
+	}
+
 	MetricPositionChanged (); // Emit Signal
 }
 
@@ -2469,6 +2475,12 @@ TempoMap::gui_move_meter (MeterSection* ms, const double& pulse)
 		}
 	}
 
+	Metrics::const_iterator d = future_map.begin();
+	while (d != future_map.end()) {
+		delete (*d);
+		++d;
+	}
+
 	MetricPositionChanged (); // Emit Signal
 }