diff --git a/async.c b/async.c
index 9791d8e6a1e2c7ea1e49fc6d91511ac36849675c..cd4a4898ed5d998d45ed69b9613ad928ce419514 100644
--- a/async.c
+++ b/async.c
@@ -205,6 +205,7 @@ aio_ctx_finalize(GSource     *source)
     event_notifier_cleanup(&ctx->notifier);
     qemu_mutex_destroy(&ctx->bh_lock);
     g_array_free(ctx->pollfds, TRUE);
+    timerlistgroup_deinit(&ctx->tlg);
 }
 
 static GSourceFuncs aio_source_funcs = {
@@ -244,6 +245,7 @@ AioContext *aio_context_new(void)
     aio_set_event_notifier(ctx, &ctx->notifier, 
                            (EventNotifierHandler *)
                            event_notifier_test_and_clear);
+    timerlistgroup_init(&ctx->tlg);
 
     return ctx;
 }
diff --git a/include/block/aio.h b/include/block/aio.h
index 1e3ed1c3472b77d00063ca1189e4dac734a443fb..06f3aadb365cc75a21e361f16c1c10d9860ddb21 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -19,6 +19,7 @@
 #include "qemu/queue.h"
 #include "qemu/event_notifier.h"
 #include "qemu/thread.h"
+#include "qemu/timer.h"
 
 typedef struct BlockDriverAIOCB BlockDriverAIOCB;
 typedef void BlockDriverCompletionFunc(void *opaque, int ret);
@@ -73,6 +74,9 @@ struct AioContext {
 
     /* Thread pool for performing work and receiving completion callbacks */
     struct ThreadPool *thread_pool;
+
+    /* TimerLists for calling timers - one per clock type */
+    QEMUTimerListGroup tlg;
 };
 
 /**
diff --git a/tests/test-aio.c b/tests/test-aio.c
index 1ab5637d95d403269012422e74b9ac3292cfcb08..e1f394b75cf6f9b77b6993bb0e70d11565546ce8 100644
--- a/tests/test-aio.c
+++ b/tests/test-aio.c
@@ -12,6 +12,7 @@
 
 #include <glib.h>
 #include "block/aio.h"
+#include "qemu/timer.h"
 
 AioContext *ctx;
 
@@ -630,6 +631,8 @@ int main(int argc, char **argv)
 {
     GSource *src;
 
+    init_clocks();
+
     ctx = aio_context_new();
     src = aio_get_g_source(ctx);
     g_source_attach(src, NULL);
diff --git a/tests/test-thread-pool.c b/tests/test-thread-pool.c
index 8188d1a69db1e81655b27ba1934d7438b8a1e0dc..c1f8e13a9f3fdbfb0d67a34534667b0e4df8a907 100644
--- a/tests/test-thread-pool.c
+++ b/tests/test-thread-pool.c
@@ -3,6 +3,7 @@
 #include "block/aio.h"
 #include "block/thread-pool.h"
 #include "block/block.h"
+#include "qemu/timer.h"
 
 static AioContext *ctx;
 static ThreadPool *pool;
@@ -205,6 +206,8 @@ int main(int argc, char **argv)
 {
     int ret;
 
+    init_clocks();
+
     ctx = aio_context_new();
     pool = aio_get_thread_pool(ctx);