diff --git a/minimal_theme.tres b/minimal_theme.tres
index 04d883d..93037b3 100644
--- a/minimal_theme.tres
+++ b/minimal_theme.tres
@@ -588,6 +588,7 @@ func _init() -> void:
 
 	sb = base_sb.duplicate()
 	sb.set_content_margin_all(int(popup_margin * scale))
+	sb.set_corner_radius_all(0)
 	set_stylebox('panel', 'PopupDialog', sb)
 	set_stylebox('panel', 'AcceptDialog', sb)
 
@@ -797,4 +798,4 @@ func _set_border(sb: StyleBoxFlat, color: Color, width: float = 1, blend: bool =
 
 
 [resource]
-script = SubResource("GDScript_hhmc0")
\ No newline at end of file
+script = SubResource("GDScript_hhmc0")