diff --git a/src/dorkbox/jna/linux/GtkTheme.java b/src/dorkbox/jna/linux/GtkTheme.java
index a834a30..c6c84a1 100644
--- a/src/dorkbox/jna/linux/GtkTheme.java
+++ b/src/dorkbox/jna/linux/GtkTheme.java
@@ -121,6 +121,7 @@ class GtkTheme {
                 } finally {
                     if (item != null) {
                         Gtk2.gtk_widget_destroy(item);
+                        Gtk2.gtk_widget_destroy(offscreen);
                     }
                 }
             }