diff --git a/supercollider/a_lot_of_tiles_trivial_scan_gui.scd b/supercollider/a_lot_of_tiles_trivial_scan_gui.scd
index 1ac3d68..a78feea 100644
--- a/supercollider/a_lot_of_tiles_trivial_scan_gui.scd
+++ b/supercollider/a_lot_of_tiles_trivial_scan_gui.scd
@@ -125,9 +125,9 @@ transportView = {
 		if(measure.size == 1, {measure = "  " ++ measure});
 		if(measure.size == 2, {measure = " " ++ measure});
 		measure ++ ":" ++ beat};
-	// [-30, -105, -104].asAscii and [-30, -105, -113].asAscii are unicode inverse bullet and normal bullet, respectively
-	metronomeStringFunc = {arg curBeat; case {curBeat % 8 < 1} {[-30, -105, -104].asAscii}
-		{curBeat % 2 < 1} {[-30, -105, -113].asAscii} {true} {" "}};
+	// [-30, -105, -104].collect(_.asAscii).as(String) and [-30, -105, -113].collect(_.asAscii).as(String) are unicode inverse bullet and normal bullet, respectively
+	metronomeStringFunc = {arg curBeat; case {curBeat % 8 < 1} {[-30, -105, -104].collect(_.asAscii).as(String)}
+		{curBeat % 2 < 1} {[-30, -105, -113].collect(_.asAscii).as(String)} {true} {" "}};
 	metronomeColorFunc = {arg curBeat; case {curBeat % 32 < 1} {Color.red} {curBeat % 8 < 1} {Color.blue} {true} {Color.black}};
 
 	// get current time and call update clock and metronome
@@ -217,7 +217,7 @@ transportView = {
 	HLayout([VLayout(HLayout(
 		clock = StaticText().string_("  1:1").font_(Font("Monaco", 200)),
 		StaticText().string_("|").font_(Font("Monaco", 200)),
-		metronome = StaticText().string_([-30, -105, -104].asAscii).font_(Font("Monaco", 300)).stringColor_(Color.red)), nil, transport),
+		metronome = StaticText().string_([-30, -105, -104].collect(_.asAscii).as(String)).font_(Font("Monaco", 300)).stringColor_(Color.red)), nil, transport),
 	alignment: \top])};
 
 // mixer