diff --git a/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c b/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
index 9fec27a5a1..1318bccc8c 100644
--- a/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
+++ b/subprojects/gst-plugins-bad/sys/va/gstvah264enc.c
@@ -3386,6 +3386,7 @@ gst_va_h264_enc_set_property (GObject * object, guint prop_id,
       break;
     case PROP_CPB_SIZE:
       self->prop.cpb_size = g_value_get_uint (value);
+      g_atomic_int_set (&GST_VA_BASE_ENC (self)->reconf, TRUE);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);