1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am
index 22110b57..e41d8d3c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -114,6 +114,7 @@ pkginclude_HEADERS =			   \
 	src/filters.h			   \
 	src/chain.h			   \
 	src/precmd.h			   \
+	src/derive.h			   \
 	src/output.h			   \
 	src/emacs.h			   \
 	src/help.h			   \