diff --git a/libavfilter/gradfun.h b/libavfilter/gradfun.h
index 01e9eed697..f6f7311d1d 100644
--- a/libavfilter/gradfun.h
+++ b/libavfilter/gradfun.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2010 Nolan Lum <nol888@gmail.com>
- * Copyright (c) 2009 Loren Merritt <lorenm@u.washignton.edu>
+ * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
  *
  * This file is part of Libav.
  *
diff --git a/libavfilter/vf_gradfun.c b/libavfilter/vf_gradfun.c
index ed3a783728..718b7fd2f8 100644
--- a/libavfilter/vf_gradfun.c
+++ b/libavfilter/vf_gradfun.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2010 Nolan Lum <nol888@gmail.com>
- * Copyright (c) 2009 Loren Merritt <lorenm@u.washignton.edu>
+ * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
  *
  * This file is part of Libav.
  *
diff --git a/libavfilter/x86/vf_gradfun.c b/libavfilter/x86/vf_gradfun.c
index e571af7f88..f73904718d 100644
--- a/libavfilter/x86/vf_gradfun.c
+++ b/libavfilter/x86/vf_gradfun.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 Loren Merritt <lorenm@u.washignton.edu>
+ * Copyright (C) 2009 Loren Merritt <lorenm@u.washington.edu>
  *
  * This file is part of Libav.
  *