diff --git a/legacy/ecore/src/lib/ecore/ecore_poll.c b/legacy/ecore/src/lib/ecore/ecore_poll.c
index 384ee68228..089212ef57 100644
--- a/legacy/ecore/src/lib/ecore/ecore_poll.c
+++ b/legacy/ecore/src/lib/ecore/ecore_poll.c
@@ -194,6 +194,13 @@ ecore_poller_poll_interval_set(Ecore_Poller_Type type __UNUSED__,
                                double            poll_time)
 {
    EINA_MAIN_LOOP_CHECK_RETURN;
+
+   if (poll_time < 0.0)
+     {
+        ERR("Poll time %f less than zero, ignored", poll_time);
+        return;
+     }
+
    poll_interval = poll_time;
    _ecore_poller_next_tick_eval();
 }
diff --git a/legacy/ecore/src/lib/ecore/ecore_timer.c b/legacy/ecore/src/lib/ecore/ecore_timer.c
index b5b6e6dd05..e462b37b34 100644
--- a/legacy/ecore/src/lib/ecore/ecore_timer.c
+++ b/legacy/ecore/src/lib/ecore/ecore_timer.c
@@ -233,6 +233,12 @@ ecore_timer_interval_set(Ecore_Timer *timer,
    EINA_MAIN_LOOP_CHECK_RETURN;
    _ecore_lock();
 
+   if (in < 0.0)
+     {
+        ERR("Interval %f less than zero, ignored", in);
+        goto unlock;
+     }
+
    if (!ECORE_MAGIC_CHECK(timer, ECORE_MAGIC_TIMER))
      {
         ECORE_MAGIC_FAIL(timer, ECORE_MAGIC_TIMER,