1 files changed, 3 insertions, 3 deletions
diff --git a/test/fiddle/test_pointer.rb b/test/fiddle/test_pointer.rb
index ec677324eb..aa77c619ef 100644
--- a/test/fiddle/test_pointer.rb
+++ b/test/fiddle/test_pointer.rb
@@ -35,7 +35,7 @@ module Fiddle
     end
 
     def test_to_str
-      str = "hello world"
+      str = Marshal.load(Marshal.dump("hello world"))
       ptr = Pointer[str]
 
       assert_equal 3, ptr.to_str(3).length
@@ -46,7 +46,7 @@ module Fiddle
     end
 
     def test_to_s
-      str = "hello world"
+      str = Marshal.load(Marshal.dump("hello world"))
       ptr = Pointer[str]
 
       assert_equal 3, ptr.to_s(3).length
@@ -202,7 +202,7 @@ module Fiddle
         assert_equal(str[0].ord, ptr[0])
         assert_equal(str[1].ord, ptr[1])
       }
-      str = 'abc'
+      str = Marshal.load(Marshal.dump('abc'))
       ptr = Pointer[str]
       check.call(str, ptr)