diff --git a/async.c b/async.c
index a32d528..0ed973e 100644
--- a/async.c
+++ b/async.c
@@ -144,6 +144,7 @@ static redisAsyncContext *redisAsyncInitialize(redisContext *c) {
     ac->ev.addWrite = NULL;
     ac->ev.delWrite = NULL;
     ac->ev.cleanup = NULL;
+    ac->ev.scheduleTimer = NULL;
 
     ac->onConnect = NULL;
     ac->onDisconnect = NULL;
@@ -844,4 +845,4 @@ void redisAsyncSetTimeout(redisAsyncContext *ac, struct timeval tv) {
     }
 
     *ac->c.timeout = tv;
-}
\ No newline at end of file
+}