diff --git a/brainglobe_utils/qtpy/collapsible_widget.py b/brainglobe_utils/qtpy/collapsible_widget.py
index 8c15b46..ee22bd4 100644
--- a/brainglobe_utils/qtpy/collapsible_widget.py
+++ b/brainglobe_utils/qtpy/collapsible_widget.py
@@ -29,6 +29,7 @@ def __init__(
         self,
         title: str = "",
         parent: Optional[QWidget] = None,
+        expanded_icon: Optional[str] = "▼",
         collapsed_icon: Optional[str] = "▶",
     ):
         """
@@ -41,7 +42,12 @@ def __init__(
         parent : QWidget or None, optional
             The parent widget.
         """
-        super().__init__(title, parent, collapsedIcon=collapsed_icon)
+        super().__init__(
+            title,
+            parent,
+            expandedIcon=expanded_icon,
+            collapsedIcon=collapsed_icon,
+        )
         self.currently_expanded = False
 
         self.toggled.connect(self._on_toggle)