diff --git a/lemon/Makefile.am b/lemon/Makefile.am
--- a/lemon/Makefile.am
+++ b/lemon/Makefile.am
@@ -17,6 +17,7 @@
 
 lemon_HEADERS += \
         lemon/arg_parser.h \
+	lemon/assert.h \
         lemon/bfs.h \
         lemon/bin_heap.h \
         lemon/dfs.h \