diff --git a/mappers/date.inc b/mappers/date.inc
index 6cc5bca..7fdda97 100644
--- a/mappers/date.inc
+++ b/mappers/date.inc
@@ -51,9 +51,15 @@ function date_feeds_set_target($source, $entity, $target, $feed_element) {
     if (is_array($feed_element)) {
       $feed_element = $feed_element[0];
     }
-    if ($sub_field == 'end') {
+
+    // Empty string means no time - so clear the date field!
+    if (!is_numeric($feed_element) && !strtotime($feed_element)) {
+        $feed_element = new FeedsDateTimeElement(NULL, NULL);
+    }
+    elseif ($sub_field == 'end') {
       $feed_element = new FeedsDateTimeElement(NULL, $feed_element);
     }
+
     else {
       $feed_element = new FeedsDateTimeElement($feed_element, NULL);
     }