diff --git a/gst-libs/gst/app/gstappsrc.c b/gst-libs/gst/app/gstappsrc.c
index 0f8f7ae852..95766d33e1 100644
--- a/gst-libs/gst/app/gstappsrc.c
+++ b/gst-libs/gst/app/gstappsrc.c
@@ -1008,15 +1008,16 @@ gst_app_src_create (GstBaseSrc * bsrc, guint64 offset, guint size,
     if (!g_queue_is_empty (priv->queue)) {
       guint buf_size;
 
-      *buf = g_queue_pop_head (priv->queue);
-      buf_size = gst_buffer_get_size (*buf);
-
-      GST_DEBUG_OBJECT (appsrc, "we have buffer %p of size %u", *buf, buf_size);
       if (priv->new_caps) {
         gst_app_src_do_negotiate (bsrc);
         priv->new_caps = FALSE;
       }
 
+      *buf = g_queue_pop_head (priv->queue);
+      buf_size = gst_buffer_get_size (*buf);
+
+      GST_DEBUG_OBJECT (appsrc, "we have buffer %p of size %u", *buf, buf_size);
+
       priv->queued_bytes -= buf_size;
 
       /* only update the offset when in random_access mode */