diff --git a/ChangeLog b/ChangeLog
index e0f5d5c861..0557a5a896 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Sep 18 07:03:36 2014  Eric Wong  <e@80x24.org>
+
+	* test/-ext-/string/test_modify_expand.rb: increase limit
+	  for {je,tc}malloc [Bug #10236]
+
 Thu Sep 18 06:41:18 2014  Eric Wong  <e@80x24.org>
 
 	* ext/zlib/zlib.c (struct gzfile): pack (288 => 272 bytes) on 64-bit
diff --git a/test/-ext-/string/test_modify_expand.rb b/test/-ext-/string/test_modify_expand.rb
index 6a18560bd4..1d20db4e6c 100644
--- a/test/-ext-/string/test_modify_expand.rb
+++ b/test/-ext-/string/test_modify_expand.rb
@@ -4,7 +4,8 @@ require_relative '../../ruby/envutil'
 
 class Test_StringModifyExpand < Test::Unit::TestCase
   def test_modify_expand_memory_leak
-    assert_no_memory_leak(["-r-test-/string/string"], <<-PRE, <<-CMD, "rb_str_modify_expand()")
+    assert_no_memory_leak(["-r-test-/string/string"],
+                          <<-PRE, <<-CMD, "rb_str_modify_expand()", limit: 2.5)
       s=Bug::String.new
     PRE
       size = $initial_size