diff --git a/ChangeLog b/ChangeLog
index 646f3eaedf..9c343e1c83 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sun Dec 22 04:07:55 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (ruby_gc_set_params): don't show obsolete warnings for
+	  RUBY_FREE_MIN/RUBY_HEAP_MIN_SLOTS if
+	  RUBY_GC_HEAP_FREE_SLOTS/RUBY_GC_HEAP_INIT_SLOTS are given.
+	  [Bug #9276]
+
 Sat Dec 21 13:00:20 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* file.c: remove unnecessary the source path from EEXIST error
diff --git a/gc.c b/gc.c
index 19e942d77d..81ea5a2448 100644
--- a/gc.c
+++ b/gc.c
@@ -5724,17 +5724,19 @@ ruby_gc_set_params(int safe_level)
     if (safe_level > 0) return;
 
     /* RUBY_GC_HEAP_FREE_SLOTS */
-    if (get_envparam_int   ("RUBY_FREE_MIN", &gc_params.heap_free_slots, 0)) {
+    if (get_envparam_int("RUBY_GC_HEAP_FREE_SLOTS", &gc_params.heap_free_slots, 0)) {
+	/* ok */
+    }
+    else if (get_envparam_int("RUBY_FREE_MIN", &gc_params.heap_free_slots, 0)) {
 	rb_warn("RUBY_FREE_MIN is obsolete. Use RUBY_GC_HEAP_FREE_SLOTS instead.");
     }
-    get_envparam_int   ("RUBY_GC_HEAP_FREE_SLOTS", &gc_params.heap_free_slots, 0);
 
     /* RUBY_GC_HEAP_INIT_SLOTS */
-    if (get_envparam_int("RUBY_HEAP_MIN_SLOTS", &gc_params.heap_init_slots, 0)) {
-	rb_warn("RUBY_HEAP_MIN_SLOTS is obsolete. Use RUBY_GC_HEAP_INIT_SLOTS instead.");
+    if (get_envparam_int("RUBY_GC_HEAP_INIT_SLOTS", &gc_params.heap_init_slots, 0)) {
 	gc_set_initial_pages();
     }
-    if (get_envparam_int("RUBY_GC_HEAP_INIT_SLOTS", &gc_params.heap_init_slots, 0)) {
+    else if (get_envparam_int("RUBY_HEAP_MIN_SLOTS", &gc_params.heap_init_slots, 0)) {
+	rb_warn("RUBY_HEAP_MIN_SLOTS is obsolete. Use RUBY_GC_HEAP_INIT_SLOTS instead.");
 	gc_set_initial_pages();
     }