diff --git a/spa/include/spa/graph-scheduler3.h b/spa/include/spa/graph-scheduler3.h
index 29dbdaae4..27e494b5e 100644
--- a/spa/include/spa/graph-scheduler3.h
+++ b/spa/include/spa/graph-scheduler3.h
@@ -100,8 +100,10 @@ static inline int spa_graph_impl_have_output(void *data, struct spa_graph_node *
 		struct spa_graph_node *pnode;
 		uint32_t prequired, pready;
 
-		if ((pport = p->peer) == NULL)
+		if ((pport = p->peer) == NULL) {
+			spa_debug("node %p port %p has no peer", node, p);
 			continue;
+		}
 
 		pnode = pport->node;
 		if (pport->io->status == SPA_RESULT_HAVE_BUFFER)
diff --git a/src/pipewire/private.h b/src/pipewire/private.h
index 268279e76..13a2fbc58 100644
--- a/src/pipewire/private.h
+++ b/src/pipewire/private.h
@@ -24,14 +24,19 @@
 extern "C" {
 #endif
 
-#include <spa/graph.h>
-
 #include <sys/socket.h>
 
+
 #include "pipewire/mem.h"
 #include "pipewire/pipewire.h"
 #include "pipewire/introspect.h"
 
+#ifndef spa_debug
+#define spa_debug pw_log_trace
+#endif
+
+#include <spa/graph.h>
+
 struct pw_command;
 
 typedef bool (*pw_command_func_t) (struct pw_command *command, struct pw_core *core, char **err);