diff --git a/src/lib_ccx/ccx_mp4.h b/src/lib_ccx/ccx_mp4.h
index 6e5fe887..84eb5a8e 100644
--- a/src/lib_ccx/ccx_mp4.h
+++ b/src/lib_ccx/ccx_mp4.h
@@ -4,4 +4,5 @@
 
 
 int processmp4 (struct lib_ccx_ctx *ctx,struct ccx_s_mp4Cfg *cfg, char *file);
+int dumpchapters(struct lib_ccx_ctx *ctx,struct ccx_s_mp4Cfg *cfg, char *file);
 #endif