diff --git a/src/backends/meta-screen-cast-stream-src.c b/src/backends/meta-screen-cast-stream-src.c
index 2efe7bc23..96fd35457 100644
--- a/src/backends/meta-screen-cast-stream-src.c
+++ b/src/backends/meta-screen-cast-stream-src.c
@@ -859,6 +859,10 @@ on_stream_add_buffer (void             *data,
 
   if (dmabuf_handle)
     {
+      meta_topic (META_DEBUG_SCREEN_CAST,
+                  "Allocating DMA buffer for pw_stream %u",
+                  pw_stream_get_node_id (priv->pipewire_stream));
+
       spa_data[0].type = SPA_DATA_DmaBuf;
       spa_data[0].flags = SPA_DATA_FLAG_READWRITE;
       spa_data[0].fd = cogl_dma_buf_handle_get_fd (dmabuf_handle);
@@ -878,6 +882,10 @@ on_stream_add_buffer (void             *data,
           return;
         }
 
+      meta_topic (META_DEBUG_SCREEN_CAST,
+                  "Allocating MemFd buffer for pw_stream %u",
+                  pw_stream_get_node_id (priv->pipewire_stream));
+
       /* Fallback to a memfd buffer */
       spa_data[0].type = SPA_DATA_MemFd;
       spa_data[0].flags = SPA_DATA_FLAG_READWRITE;