diff --git a/spec/ruby/library/objectspace/memsize_of_spec.rb b/spec/ruby/library/objectspace/memsize_of_spec.rb
index eefafbb334..cbb5a07d54 100644
--- a/spec/ruby/library/objectspace/memsize_of_spec.rb
+++ b/spec/ruby/library/objectspace/memsize_of_spec.rb
@@ -13,7 +13,7 @@ describe "ObjectSpace.memsize_of" do
   end
 
   it "returns 0 for literal Symbols" do
-    ObjectSpace.memsize_of(:abc).should == 0
+    ObjectSpace.memsize_of(:object_space_memsize_spec_static_sym).should == 0
   end
 
   it "returns a positive Integer for an Object" do