diff --git a/tests/host/common/user_interface.cpp b/tests/host/common/user_interface.cpp
index 8ed56a9ec0..c15e3759b9 100644
--- a/tests/host/common/user_interface.cpp
+++ b/tests/host/common/user_interface.cpp
@@ -424,9 +424,9 @@ void esp_schedule (void)
 {
 }
 
-void optimistic_yield (uint32_t ms)
+void optimistic_yield (uint32_t interval_us)
 {
-	usleep(ms * 1000);
+	usleep(interval_us);
 }
 
 void dns_setserver (u8_t numdns, ip_addr_t *dnsserver)