diff --git a/doc/Makefile.am b/doc/Makefile.am
index 478b4cdf..179841aa 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -25,5 +25,5 @@ microhttpd_TEXINFOS = \
   lgpl.texi \
   ecos.texi
 
-EXTRA_DIST = $(man_MANS) $(microhttpd_TEXINFOS) 
+EXTRA_DIST = $(man_MANS) $(microhttpd_TEXINFOS) performance_data.png