diff --git a/components/newlib/test/test_time.c b/components/newlib/test/test_time.c
index 752fa091ab..15db812012 100644
--- a/components/newlib/test/test_time.c
+++ b/components/newlib/test/test_time.c
@@ -247,6 +247,7 @@ static void get_time_task(void *pvParameters)
     // although exit flag is set in another task, checking (exit_flag == false) is safe
     while (exit_flag == false) {
         gettimeofday(&tv_time, NULL);
+        vTaskDelay(1500 / portTICK_PERIOD_MS);
     }
     xSemaphoreGive(*sema);
     vTaskDelete(NULL);
@@ -255,13 +256,9 @@ static void get_time_task(void *pvParameters)
 static void start_measure(int64_t* sys_time, int64_t* real_time)
 {
     struct timeval tv_time;
-    int64_t t1, t2;
-    do {
-        t1 = esp_timer_get_time();
-        gettimeofday(&tv_time, NULL);
-        t2 = esp_timer_get_time();
-    } while (t2 - t1 > 40);
-    *real_time = t2;
+    // there shouldn't be much time between gettimeofday and esp_timer_get_time
+    gettimeofday(&tv_time, NULL);
+    *real_time = esp_timer_get_time();
     *sys_time = (int64_t)tv_time.tv_sec * 1000000L + tv_time.tv_usec;
 }
 
@@ -297,7 +294,7 @@ static void measure_time_task(void *pvParameters)
         int64_t sys_time_us[2] = { main_sys_time_us[0], 0};
         // although exit flag is set in another task, checking (exit_flag == false) is safe
         while (exit_flag == false) {
-            esp_rom_delay_us(2 * 1000000); // 2 sec
+            vTaskDelay(2000 / portTICK_PERIOD_MS);
 
             start_measure(&sys_time_us[1], &real_time_us[1]);
             result_adjtime_correction_us[1] += calc_correction("measure", sys_time_us, real_time_us);
@@ -318,7 +315,7 @@ static void measure_time_task(void *pvParameters)
     vTaskDelete(NULL);
 }
 
-TEST_CASE("test time adjustment happens linearly", "[newlib][timeout=35]")
+TEST_CASE("test time adjustment happens linearly", "[newlib][timeout=15]")
 {
     exit_flag = false;
 
@@ -331,8 +328,8 @@ TEST_CASE("test time adjustment happens linearly", "[newlib][timeout=35]")
     xTaskCreatePinnedToCore(get_time_task, "get_time_task", 4096, &exit_sema[0], UNITY_FREERTOS_PRIORITY - 1, NULL, 0);
     xTaskCreatePinnedToCore(measure_time_task, "measure_time_task", 4096, &exit_sema[1], UNITY_FREERTOS_PRIORITY - 1, NULL, 1);
 
-    printf("start waiting for 30 seconds\n");
-    vTaskDelay(30000 / portTICK_PERIOD_MS);
+    printf("start waiting for 10 seconds\n");
+    vTaskDelay(10000 / portTICK_PERIOD_MS);
 
     // set exit flag to let thread exit
     exit_flag = true;