diff --git a/ChangeLog b/ChangeLog
index 290fdb371b..77a5048781 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Thu Jun 20 18:29:26 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* benchmark/gc/gcbench.rb: Do not use GC::Profiler::disable because
+	  GC::Profiler::disable prohibit to access profiling data. It should
+	  be spec bug.
+
+	  Skip GC::Profiler::report if RUBY_VERSION < '2.0.0'
+
 Thu Jun 20 17:59:08 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* benchmark/gc/gcbench.rb: stop GC::Profiler before output results.
diff --git a/benchmark/gc/gcbench.rb b/benchmark/gc/gcbench.rb
index aa92f0827d..12ab042ec3 100644
--- a/benchmark/gc/gcbench.rb
+++ b/benchmark/gc/gcbench.rb
@@ -12,11 +12,10 @@ GC::Profiler.enable
 tms = Benchmark.measure{|x|
   load script
 }
-GC::Profiler.disable
-GC::Profiler.report
-pp GC.stat
-
 gc_time = GC::Profiler.total_time
+GC::Profiler.report if RUBY_VERSION >= '2.0.0' # before 1.9.3, report() may run infinite loop
+GC::Profiler.disable
+pp GC.stat
 
 puts
 puts script