diff --git a/shared/process/fork.rb b/shared/process/fork.rb
index 11e18d7b1..8dbb3d0da 100644
--- a/shared/process/fork.rb
+++ b/shared/process/fork.rb
@@ -23,31 +23,31 @@
     end
 
     it "returns status zero" do
-      pid = Process.fork { exit! 0 }
+      pid = @object.fork { exit! 0 }
       _, result = Process.wait2(pid)
       result.exitstatus.should == 0
     end
 
     it "returns status zero" do
-      pid = Process.fork { exit 0 }
+      pid = @object.fork { exit 0 }
       _, result = Process.wait2(pid)
       result.exitstatus.should == 0
     end
 
     it "returns status zero" do
-      pid = Process.fork {}
+      pid = @object.fork {}
       _, result = Process.wait2(pid)
       result.exitstatus.should == 0
     end
 
     it "returns status non-zero" do
-      pid = Process.fork { exit! 42 }
+      pid = @object.fork { exit! 42 }
       _, result = Process.wait2(pid)
       result.exitstatus.should == 42
     end
 
     it "returns status non-zero" do
-      pid = Process.fork { exit 42 }
+      pid = @object.fork { exit 42 }
       _, result = Process.wait2(pid)
       result.exitstatus.should == 42
     end