diff --git a/ChangeLog b/ChangeLog
index 3fa50f7eae..39d44ec6e5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Apr  7 10:22:51 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* internal.h: fix typo. Patch by @sferik [fix GH-865]
+
 Mon Apr  6 22:52:35 2015  Tanaka Akira  <akr@fsij.org>
 
 	* enum.c: Enumerable#chunk and Enumerable#slice_before no longer takes
diff --git a/internal.h b/internal.h
index e29fcb2e08..dc1cbaef20 100644
--- a/internal.h
+++ b/internal.h
@@ -844,7 +844,7 @@ VALUE rb_iseq_absolute_path(VALUE iseqval);
 VALUE rb_iseq_label(VALUE iseqval);
 VALUE rb_iseq_base_label(VALUE iseqval);
 VALUE rb_iseq_first_lineno(VALUE iseqval);
-VALUE rb_iseq_klass(VALUE iseqval); /* completely temporary fucntion */
+VALUE rb_iseq_klass(VALUE iseqval); /* completely temporary function */
 VALUE rb_iseq_method_name(VALUE self);
 
 /* load.c */