diff --git a/AUTHORS b/AUTHORS
index e22c3f2fe2..17b645d05f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -111,6 +111,7 @@ Boris Faure <billiob@gmail.com>
 Eduardo Lima (Etrunko) <eblima@gmail.com>
 Leandro Dorileo (dorileo) <dorileo@profusion.mobi>
 Patryk Kaczmarek <patryk.k@samsung.com>
+Zbigniew Kosinski <z.kosinski@samsung.com>
 
 Embryo
 ------
diff --git a/src/lib/evas/Evas.h b/src/lib/evas/Evas.h
index acd28866e4..a5bfd3eaef 100644
--- a/src/lib/evas/Evas.h
+++ b/src/lib/evas/Evas.h
@@ -11050,7 +11050,8 @@ EAPI const char                              *evas_object_textblock_replace_char
  *
  * Normally alignment is 0.0 (top of object). Values given should be
  * between 0.0 and 1.0 (1.0 bottom of object, 0.5 being vertically centered
- * etc.).
+ * etc.). Function sets 0.0 on values less than 0.0 and 1.0 on values
+ * greater than 1.0.
  *
  * @param obj The given textblock object.
  * @param align A value between @c 0.0 and @c 1.0.