--- a/Makefile.in
+++ b/Makefile.in
@@ -249,7 +249,7 @@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
-SUBDIRS = src sample doc
+SUBDIRS = src doc
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libnjb.pc
 EXTRA_DIST = libnjb.pc \