diff --git a/libavformat/framehook.h b/libavformat/framehook.h
index 06ed4f8898..d5573c1df4 100644
--- a/libavformat/framehook.h
+++ b/libavformat/framehook.h
@@ -22,7 +22,7 @@
 #ifndef _FRAMEHOOK_H
 #define _FRAMEHOOK_H
 
-#warning VHOOK is deprecated please help porting libmpcodecs or a better filter system to ffmpeg instead of wasting your time writing new fiters for this crappy one
+#warning VHOOK is deprecated. Please help porting libmpcodecs or a better filter system to FFmpeg instead of wasting your time writing new filters for this crappy one.
 
 /*
  * Prototypes for interface to .so that implement a video processing hook