diff --git a/lemon/Makefile.am b/lemon/Makefile.am
--- a/lemon/Makefile.am
+++ b/lemon/Makefile.am
@@ -18,7 +18,6 @@
         lemon/dim2.h \
 	lemon/maps.h \
 	lemon/path.h \
-	lemon/path_utils.h \
         lemon/random.h \
 	lemon/list_graph.h \
         lemon/tolerance.h