diff --git a/extra/ui/tools/traceback/traceback.factor b/extra/ui/tools/traceback/traceback.factor
index e129cc673d..c5a702380a 100644
--- a/extra/ui/tools/traceback/traceback.factor
+++ b/extra/ui/tools/traceback/traceback.factor
@@ -27,8 +27,8 @@ M: traceback-gadget pref-dim* drop { 300 400 } ;
             [
                 g control-model <datastack-display> 1/2 track,
                 g control-model <retainstack-display> 1/2 track,
-            ] { 1 0 } make-track 1/2 track,
-            g control-model <callstack-display> 1/2 track,
+            ] { 1 0 } make-track 1/3 track,
+            g control-model <callstack-display> 2/3 track,
         ] with-gadget
     ] keep ;