diff --git a/lemon/Makefile.am b/lemon/Makefile.am
--- a/lemon/Makefile.am
+++ b/lemon/Makefile.am
@@ -20,6 +20,7 @@
 	lemon/assert.h \
         lemon/bfs.h \
         lemon/bin_heap.h \
+        lemon/circulation.h \
         lemon/color.h \
 	lemon/concept_check.h \
         lemon/counter.h \