diff --git a/spec/ruby/optional/capi/rbasic_spec.rb b/spec/ruby/optional/capi/rbasic_spec.rb
index 691c4250d2..6300680d99 100644
--- a/spec/ruby/optional/capi/rbasic_spec.rb
+++ b/spec/ruby/optional/capi/rbasic_spec.rb
@@ -20,4 +20,24 @@ describe "RBasic support for RData" do
     @data = -> { [@wrapping.wrap_struct(1024), @wrapping.wrap_struct(1025)] }
   end
   it_should_behave_like :rbasic
+
+  it "supports user flags" do
+    obj, _ = @data.call
+    initial = @specs.get_flags(obj)
+    @specs.set_flags(obj, 1 << 14 | 1 << 16 | initial).should == 1 << 14 | 1 << 16 | initial
+    @specs.get_flags(obj).should == 1 << 14 | 1 << 16 | initial
+    @specs.set_flags(obj, initial).should == initial
+  end
+
+  it "supports copying the flags from one object over to the other" do
+    obj1, obj2 = @data.call
+    initial = @specs.get_flags(obj1)
+    @specs.get_flags(obj2).should == initial
+    @specs.set_flags(obj1, 1 << 14 | 1 << 16 | initial)
+    @specs.copy_flags(obj2, obj1)
+    @specs.get_flags(obj2).should == 1 << 14 | 1 << 16 | initial
+    @specs.set_flags(obj1, initial)
+    @specs.copy_flags(obj2, obj1)
+    @specs.get_flags(obj2).should == initial
+  end
 end
diff --git a/spec/ruby/optional/capi/shared/rbasic.rb b/spec/ruby/optional/capi/shared/rbasic.rb
index 659cb074dd..5ef63e81e3 100644
--- a/spec/ruby/optional/capi/shared/rbasic.rb
+++ b/spec/ruby/optional/capi/shared/rbasic.rb
@@ -54,26 +54,6 @@ describe :rbasic, shared: true do
     end
   end
 
-  it "supports user flags" do
-    obj, _ = @data.call
-    initial = @specs.get_flags(obj)
-    @specs.set_flags(obj, 1 << 14 | 1 << 16 | initial).should == 1 << 14 | 1 << 16 | initial
-    @specs.get_flags(obj).should == 1 << 14 | 1 << 16 | initial
-    @specs.set_flags(obj, initial).should == initial
-  end
-
-  it "supports copying the flags from one object over to the other" do
-    obj1, obj2 = @data.call
-    initial = @specs.get_flags(obj1)
-    @specs.get_flags(obj2).should == initial
-    @specs.set_flags(obj1, 1 << 14 | 1 << 16 | initial)
-    @specs.copy_flags(obj2, obj1)
-    @specs.get_flags(obj2).should == 1 << 14 | 1 << 16 | initial
-    @specs.set_flags(obj1, initial)
-    @specs.copy_flags(obj2, obj1)
-    @specs.get_flags(obj2).should == initial
-  end
-
   it "supports retrieving the (meta)class" do
     obj, _ = @data.call
     @specs.get_klass(obj).should == obj.class