1 files changed, 8 insertions, 0 deletions
diff --git a/mate-volume-control/src/gvc-balance-bar.h b/mate-volume-control/src/gvc-balance-bar.h
index 53f8c83..bb3b8f7 100644
--- a/mate-volume-control/src/gvc-balance-bar.h
+++ b/mate-volume-control/src/gvc-balance-bar.h
@@ -46,13 +46,21 @@ typedef struct GvcBalanceBarPrivate GvcBalanceBarPrivate;
 
 typedef struct
 {
+#if GTK_CHECK_VERSION (3, 0, 0)
+        GtkBox                parent;
+#else
         GtkHBox               parent;
+#endif
         GvcBalanceBarPrivate *priv;
 } GvcBalanceBar;
 
 typedef struct
 {
+#if GTK_CHECK_VERSION (3, 0, 0)
+        GtkBoxClass           parent_class;
+#else
         GtkHBoxClass          parent_class;
+#endif
 } GvcBalanceBarClass;
 
 GType               gvc_balance_bar_get_type            (void);