diff --git a/src/gui/bubble-bar.vala b/src/gui/bubble-bar.vala
index e1f29cc..7dab6b5 100644
--- a/src/gui/bubble-bar.vala
+++ b/src/gui/bubble-bar.vala
@@ -38,10 +38,10 @@ class TheCatTools.GUI.BoubleBar : Adw.Bin, Gtk.Orientable {
         public void bind_state_to_bubble_pos (Bubble bubble) {
             bubble.notify["value-x"].connect (() => {
                 bool inb = true;
-                if (bubble.value_x >= clamps.upper || bubble.value_y >= clamps.upper) {
+                if (double.max (bubble.value_x, bubble.value_y) >= clamps.upper) {
                     set_state_flags (Gtk.StateFlags.CHECKED, false);
                     inb = false;
-                } else if (bubble.value_x <= clamps.lower || bubble.value_y <= clamps.lower) {
+                } else if (double.min (bubble.value_x, bubble.value_y) <= clamps.lower) {
                     set_state_flags (Gtk.StateFlags.CHECKED, false);
                     inb = false;
                 } else