diff --git a/st.c b/st.c
index b8ad6ab6c2..456e61a7d7 100644
--- a/st.c
+++ b/st.c
@@ -2061,6 +2061,7 @@ st_numhash(st_data_t n)
     return (st_index_t)((n>>s1|(n<<s2)) ^ (n>>s2));
 }
 
+#ifdef RUBY
 /* Expand TAB to be suitable for holding SIZ entries in total.
    Pre-existing entries remain not deleted inside of TAB, but its bins
    are cleared to expect future reconstruction. See rehash below. */
@@ -2200,7 +2201,6 @@ st_rehash(st_table *tab)
     } while (rebuilt_p);
 }
 
-#ifdef RUBY
 static st_data_t
 st_stringify(VALUE key)
 {