1 files changed, 4 insertions, 0 deletions
diff --git a/st.c b/st.c
index ff5bb305ab..f26443f99c 100644
--- a/st.c
+++ b/st.c
@@ -73,6 +73,10 @@ static const struct st_hash_type type_strcasehash = {
 static void rehash(st_table *);
 
 #ifdef RUBY
+#undef malloc
+#undef realloc
+#undef calloc
+#undef free
 #define malloc xmalloc
 #define calloc xcalloc
 #define realloc xrealloc