1 files changed, 1 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 569e554..bcbc27b 100644
--- a/Makefile
+++ b/Makefile
@@ -134,6 +134,7 @@ INSTALL_ITEMS := $(INSTALL_ITEMS) $(I):$(Is)/html_style_element.h
 INSTALL_ITEMS := $(INSTALL_ITEMS) $(I):$(Is)/html_frameset_element.h
 INSTALL_ITEMS := $(INSTALL_ITEMS) $(I):$(Is)/html_frame_element.h
 INSTALL_ITEMS := $(INSTALL_ITEMS) $(I):$(Is)/html_iframe_element.h
+INSTALL_ITEMS := $(INSTALL_ITEMS) $(I):$(Is)/html_isindex_element.h
 
 INSTALL_ITEMS := $(INSTALL_ITEMS) /$(LIBDIR)/pkgconfig:lib$(COMPONENT).pc.in
 INSTALL_ITEMS := $(INSTALL_ITEMS) /$(LIBDIR):$(OUTPUT)