diff --git a/hash.c b/hash.c
index d025b1c30a..1545af87b2 100644
--- a/hash.c
+++ b/hash.c
@@ -1177,8 +1177,8 @@ hash_st_free(VALUE hash)
 
     st_table *tab = RHASH_ST_TABLE(hash);
 
-    free(tab->bins);
-    free(tab->entries);
+    xfree(tab->bins);
+    xfree(tab->entries);
 }
 
 static void