diff --git a/src/cpp/flann/util/lsh_table.h b/src/cpp/flann/util/lsh_table.h
index f023fb4cbb7aa14aad5583d7e3d67aa1d2e8f943..d6057235c3e4c3983e89f074e98d6f01e88ee5f3 100644
--- a/src/cpp/flann/util/lsh_table.h
+++ b/src/cpp/flann/util/lsh_table.h
@@ -234,8 +234,7 @@ public:
     size_t getKey(const ElementType* /*feature*/) const
     {
         std::cerr << "LSH is not implemented for that type" << std::endl;
-        throw;
-        return 1;
+        return -1;
     }
 
     /** Get statistics about the table