1 files changed, 18 insertions, 16 deletions
diff --git a/spec/ruby/core/threadgroup/add_spec.rb b/spec/ruby/core/threadgroup/add_spec.rb
index 4320f7ba30..267e0e9713 100644
--- a/spec/ruby/core/threadgroup/add_spec.rb
+++ b/spec/ruby/core/threadgroup/add_spec.rb
@@ -13,24 +13,26 @@ describe "ThreadGroup#add" do
     @thread.join
   end
 
-  it "adds the given thread to a group and returns self" do
-    @thread.group.should_not == nil
+  platform_is_not :mingw do
+    it "adds the given thread to a group and returns self" do
+      @thread.group.should_not == nil
 
-    tg = ThreadGroup.new
-    tg.add(@thread).should == tg
-    @thread.group.should == tg
-    tg.list.include?(@thread).should == true
-  end
+      tg = ThreadGroup.new
+      tg.add(@thread).should == tg
+      @thread.group.should == tg
+      tg.list.include?(@thread).should == true
+    end
 
-  it "removes itself from any other threadgroup" do
-    tg1 = ThreadGroup.new
-    tg2 = ThreadGroup.new
+    it "removes itself from any other threadgroup" do
+      tg1 = ThreadGroup.new
+      tg2 = ThreadGroup.new
 
-    tg1.add(@thread)
-    @thread.group.should == tg1
-    tg2.add(@thread)
-    @thread.group.should == tg2
-    tg2.list.include?(@thread).should == true
-    tg1.list.include?(@thread).should == false
+      tg1.add(@thread)
+      @thread.group.should == tg1
+      tg2.add(@thread)
+      @thread.group.should == tg2
+      tg2.list.include?(@thread).should == true
+      tg1.list.include?(@thread).should == false
+    end
   end
 end