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-rw-r--r--mate-volume-control/gvc-level-bar.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mate-volume-control/gvc-level-bar.c b/mate-volume-control/gvc-level-bar.c
index 46bf6df..71d7614 100644
--- a/mate-volume-control/gvc-level-bar.c
+++ b/mate-volume-control/gvc-level-bar.c
@@ -782,6 +782,9 @@ gvc_level_bar_class_init (GvcLevelBarClass *klass)
widget_class->size_request = gvc_level_bar_size_request;
#endif
widget_class->size_allocate = gvc_level_bar_size_allocate;
+#if GTK_CHECK_VERSION (3, 20, 0)
+ gtk_widget_class_set_css_name (widget_class, "gvc-level-bar");
+#endif
properties[PROP_ORIENTATION] =
g_param_spec_enum ("orientation",