1 files changed, 1 insertions, 0 deletions
diff --git a/crawl-ref/source/mapdef.h b/crawl-ref/source/mapdef.h
index 25f3b7ef5a..3b104336a0 100644
--- a/crawl-ref/source/mapdef.h
+++ b/crawl-ref/source/mapdef.h
@@ -82,6 +82,7 @@ private:
     std::string remove_unreferenced(const symbol_frequency_t &freq,
                                     std::string s);
     std::string shuffle(std::string s);
+    std::string block_shuffle(const std::string &s);
 
 private:
     std::vector<std::string> lines;