diff --git a/lemon/dfs.h b/lemon/dfs.h
--- a/lemon/dfs.h
+++ b/lemon/dfs.h
@@ -27,7 +27,6 @@
 #include <lemon/bits/path_dump.h>
 #include <lemon/core.h>
 #include <lemon/error.h>
-#include <lemon/assert.h>
 #include <lemon/maps.h>
 #include <lemon/path.h>