diff --git a/libavformat/async.c b/libavformat/async.c
index 60ea14c9e0..15355fb697 100644
--- a/libavformat/async.c
+++ b/libavformat/async.c
@@ -170,7 +170,7 @@ static int async_open(URLContext *h, const char *arg, int flags, AVDictionary **
     c->interrupt_callback = h->interrupt_callback;
     ret = ffurl_open(&c->inner, arg, flags, &interrupt_callback, options);
     if (ret != 0) {
-        av_log(h, AV_LOG_ERROR, "ffurl_open failed : %s, %s\n", strerror(ret), arg);
+        av_log(h, AV_LOG_ERROR, "ffurl_open failed : %s, %s\n", av_err2str(ret), arg);
         goto url_fail;
     }
 
@@ -179,25 +179,25 @@ static int async_open(URLContext *h, const char *arg, int flags, AVDictionary **
 
     ret = pthread_mutex_init(&c->mutex, NULL);
     if (ret != 0) {
-        av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", strerror(ret));
+        av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", av_err2str(ret));
         goto mutex_fail;
     }
 
     ret = pthread_cond_init(&c->cond_wakeup_main, NULL);
     if (ret != 0) {
-        av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", strerror(ret));
+        av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", av_err2str(ret));
         goto cond_wakeup_main_fail;
     }
 
     ret = pthread_cond_init(&c->cond_wakeup_background, NULL);
     if (ret != 0) {
-        av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", strerror(ret));
+        av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", av_err2str(ret));
         goto cond_wakeup_background_fail;
     }
 
     ret = pthread_create(&c->async_buffer_thread, NULL, async_buffer_task, h);
     if (ret) {
-        av_log(h, AV_LOG_ERROR, "pthread_create failed : %s\n", strerror(ret));
+        av_log(h, AV_LOG_ERROR, "pthread_create failed : %s\n", av_err2str(ret));
         goto thread_fail;
     }
 
@@ -229,7 +229,7 @@ static int async_close(URLContext *h)
 
     ret = pthread_join(c->async_buffer_thread, NULL);
     if (ret != 0)
-        av_log(h, AV_LOG_ERROR, "pthread_join(): %s\n", strerror(ret));
+        av_log(h, AV_LOG_ERROR, "pthread_join(): %s\n", av_err2str(ret));
 
     pthread_cond_destroy(&c->cond_wakeup_background);
     pthread_cond_destroy(&c->cond_wakeup_main);