diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 91a0d5daf5..141cec61f8 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -22,7 +22,7 @@ OBJS= bitstream.o utils.o allcodecs.o \
       audioconvert.o \
 
 
-HEADERS = avcodec.h
+HEADERS = avcodec.h opt.h
 ifneq ($(CONFIG_SWSCALER),yes)
 HEADERS += swscale.h
 endif