diff --git a/doc/ffserver.conf b/doc/ffserver.conf
index b3d3517b02..c6720908f8 100644
--- a/doc/ffserver.conf
+++ b/doc/ffserver.conf
@@ -137,7 +137,7 @@ VideoGopSize 12
 # Set this to the number of seconds backwards in time to start. Note that
 # most players will buffer 5-10 seconds of video, and also you need to allow
 # for a keyframe to appear in the data stream.
-#PreRoll 15
+#Preroll 15
 
 # ACL: