2 files changed, 2 insertions, 2 deletions
diff --git a/test/t/proc.rb b/test/t/proc.rb
index 42ac3b941..b17b21e8c 100644
--- a/test/t/proc.rb
+++ b/test/t/proc.rb
@@ -157,7 +157,7 @@ assert('&obj call to_proc if defined') do
   def mock(&b)
     b
   end
-  assert_equal pr.object_id, mock(&pr).object_id
+  assert_same pr, mock(&pr)
   assert_equal pr, mock(&pr)
 
   obj = Object.new
diff --git a/test/t/string.rb b/test/t/string.rb
index 8f008c6a7..e0f0eb99c 100644
--- a/test/t/string.rb
+++ b/test/t/string.rb
@@ -579,7 +579,7 @@ assert('String#sub', '15.2.10.5.36') do
   str = "abc"
   miss = str.sub("X", "Z")
   assert_equal str, miss
-  assert_not_equal str.object_id, miss.object_id
+  assert_not_same str, miss
 
   a = []
   assert_equal '.abc', "abc".sub("") { |i| a << i; "." }