diff --git a/tests/integration.c b/tests/integration.c
index cf5eef5..de4b3ff 100644
--- a/tests/integration.c
+++ b/tests/integration.c
@@ -321,7 +321,7 @@ static int test_looper_looping(void) {
         kill(pid, SIGTERM); waitpid(pid, NULL, 0);
         return 1;
     }
-    usleep(500000);               /* allow state to change (500ms) */
+    safe_usleep(500000);               /* allow state to change (500ms) */
 
     int sr = jack_get_sample_rate(client);
     continuous_sine = 0;          /* disable continuous tone */
@@ -345,10 +345,10 @@ static int test_looper_looping(void) {
         return 1;
     }
 
-    usleep(150000);               /* let beep start */
+    safe_usleep(150000);               /* let beep start */
 
     /* ensure beep is fully captured */
-    usleep(800000);   /* 0.8s after start of beep */
+    safe_usleep(800000);   /* 0.8s after start of beep */
 
     if (send_jack_note_on("looper:control", 1, 127) != 0) {
         jack_client_close(client);