diff --git a/jerry-libc/target/mcu-stubs/jerry-libc-target.c b/jerry-libc/target/mcu-stubs/jerry-libc-target.c
index db76edf16e..0a9e9ad738 100644
--- a/jerry-libc/target/mcu-stubs/jerry-libc-target.c
+++ b/jerry-libc/target/mcu-stubs/jerry-libc-target.c
@@ -65,5 +65,5 @@ int
 gettimeofday (void *tp __attr_unused___,  /**< struct timeval */
               void *tzp __attr_unused___) /**< struct timezone */
 {
-  return 0;
+  return -1;
 } /* gettimeofday */
diff --git a/targets/default/jerry-port-default-date.c b/targets/default/jerry-port-default-date.c
index 59c6490e74..8975b9e982 100644
--- a/targets/default/jerry-port-default-date.c
+++ b/targets/default/jerry-port-default-date.c
@@ -32,7 +32,10 @@ bool jerry_port_get_time_zone (jerry_time_zone_t *tz_p)
   tz.tz_minuteswest = 0;
   tz.tz_dsttime = 0;
 
-  gettimeofday (&tv, &tz);
+  if (gettimeofday (&tv, &tz) != 0)
+  {
+    return false;
+  }
 
   tz_p->offset = tz.tz_minuteswest;
   tz_p->daylight_saving_time = tz.tz_dsttime > 0 ? 1 : 0;
@@ -47,7 +50,10 @@ double jerry_port_get_current_time ()
 {
   struct timeval tv;
 
-  gettimeofday (&tv, NULL);
+  if (gettimeofday (&tv, NULL) != 0)
+  {
+    return 0;
+  }
 
   return ((double) tv.tv_sec) * 1000.0 + ((double) tv.tv_usec) / 1000.0;
 } /* jerry_port_get_current_time */