diff --git a/AUTHORS b/AUTHORS
index 5cef5a371e..33e11c76d5 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -19,3 +19,5 @@ Ronald Bultje <rbultje@ronald.bitfreak.net>
 Julien MOUTTE <julien@moutte.net>
 Jan Schmidt <thaytan@mad.scientist.com>
 Arwed v. Merkatz <v.merkatz@gmx.net>
+Tim-Philipp Müller <tim at centricular dot net>
+Mark Borgerding <mark at borgerding dot net> (kissfft, used in libgstfft)
diff --git a/gst-libs/gst/fft/gstfft.c b/gst-libs/gst/fft/gstfft.c
index e857384e2a..2a3cefa33c 100644
--- a/gst-libs/gst/fft/gstfft.c
+++ b/gst-libs/gst/fft/gstfft.c
@@ -24,6 +24,9 @@
  * This library includes general definitions and functions, useful for
  * all typed FFT classes.
  *
+ * The gstfft library is based on
+ * <a href="http://sourceforge.net/projects/kissfft">kissfft</a> by
+ * by Mark Borgerding.
  */
 
 #include <glib.h>