diff --git a/src/st/st-bin.c b/src/st/st-bin.c
index a2a67bb31..0a45148ee 100644
--- a/src/st/st-bin.c
+++ b/src/st/st-bin.c
@@ -250,7 +250,7 @@ st_bin_set_property (GObject      *gobject,
 
     case PROP_Y_FILL:
       st_bin_set_fill (bin,
-                       bin->priv->y_fill,
+                       bin->priv->x_fill,
                        g_value_get_boolean (value));
       break;