diff --git a/spec/guard/listeners/darwin_spec.rb b/spec/guard/listeners/darwin_spec.rb
index 7a562f1..6168f49 100644
--- a/spec/guard/listeners/darwin_spec.rb
+++ b/spec/guard/listeners/darwin_spec.rb
@@ -10,7 +10,7 @@ describe Guard::Darwin do
     end
   end
 
-  if mac?
+  if mac? && Guard::Darwin.usable?
     it "is usable on 10.6" do
       subject.should be_usable
     end
diff --git a/spec/guard/listeners/linux_spec.rb b/spec/guard/listeners/linux_spec.rb
index ba5d86f..bbdffba 100644
--- a/spec/guard/listeners/linux_spec.rb
+++ b/spec/guard/listeners/linux_spec.rb
@@ -11,7 +11,7 @@ describe Guard::Linux do
     end
   end
 
-  if linux?
+  if linux? && Guard::Linux.usable?
     it "is usable on linux" do
       subject.should be_usable
     end