--- lib/Makefile.am
+++ lib/Makefile.am
@@ -3,8 +3,7 @@
 
 lib_LTLIBRARIES = libzip.la
 noinst_HEADERS = zipint.h
-include_HEADERS = zip.h
-nodist_libinclude_HEADERS = zipconf.h
+include_HEADERS = zip.h zipconf.h
 
 # also update CMakeLists.txt when changing version
 libzip_la_LDFLAGS=-no-undefined -version-info 3:0:1