diff --git a/headers/os/kernel/OS.h b/headers/os/kernel/OS.h
index f23a86afb0..22647f36d2 100644
--- a/headers/os/kernel/OS.h
+++ b/headers/os/kernel/OS.h
@@ -7,6 +7,7 @@
 
 //! Kernel specific structures and functions
 
+#include <pthread.h>
 #include <stdarg.h>
 
 #include <SupportDefs.h>
@@ -350,6 +351,13 @@ extern status_t		_get_next_thread_info(team_id team, int32 *cookie,
 #define get_next_thread_info(team, cookie, info) \
 	_get_next_thread_info((team), (cookie), (info), sizeof(*(info)))
 
+/* bridge to the pthread API */
+extern thread_id	get_pthread_thread_id(pthread_t thread);
+/* TODO: Would be nice to have, but we use TLS to associate a thread with its
+   pthread object. So this is not trivial to implement.
+extern status_t		convert_to_pthread(thread_id thread, pthread_t *_thread);
+*/
+
 
 /* Time */
 
diff --git a/src/system/libroot/posix/pthread/pthread.c b/src/system/libroot/posix/pthread/pthread.c
index 27f85feb49..5a500c72a6 100644
--- a/src/system/libroot/posix/pthread/pthread.c
+++ b/src/system/libroot/posix/pthread/pthread.c
@@ -232,3 +232,13 @@ pthread_setconcurrency(int newLevel)
 	sConcurrencyLevel = newLevel;
 	return 0;
 }
+
+
+// #pragma mark - Haiku thread API bridge
+
+
+thread_id
+get_pthread_thread_id(pthread_t thread)
+{
+	return thread->id;
+}