1 files changed, 1 insertions, 0 deletions
diff --git a/puzzles.h b/puzzles.h
index 27e1443..6f03b1d 100644
--- a/puzzles.h
+++ b/puzzles.h
@@ -427,6 +427,7 @@ char *button2label(int button);
  * dsf.c
  */
 int *snew_dsf(int size);
+void dsf_free(int *dsf);
 
 void print_dsf(int *dsf, int size);