--- Makefile.in
+++ Makefile.in
@@ -267,7 +267,7 @@
 	     ev.3 ev.pod Symbols.ev Symbols.event
 
 man_MANS = ev.3
-include_HEADERS = ev.h ev++.h event.h
+include_HEADERS = ev.h ev++.h
 lib_LTLIBRARIES = libev.la
 libev_la_SOURCES = ev.c event.c
 libev_la_LDFLAGS = -version-info $(VERSION_INFO)