diff --git a/legacy/elementary/src/lib/Makefile.am b/legacy/elementary/src/lib/Makefile.am
index 16c576ed9a..13fbad76f8 100644
--- a/legacy/elementary/src/lib/Makefile.am
+++ b/legacy/elementary/src/lib/Makefile.am
@@ -48,6 +48,7 @@ includesdir = $(includedir)/elementary-@VMAJ@
 
 includesunstable_HEADERS = \
 elm_gen_common.h \
+elm_interface_atspi_accessible.h \
 elm_interface_fileselector.h \
 elm_interface_scrollable.h \
 elm_widget.h \