diff --git a/plugins/guests/solaris/guest.rb b/plugins/guests/solaris/guest.rb
index 06b2ae375..555ef23e7 100644
--- a/plugins/guests/solaris/guest.rb
+++ b/plugins/guests/solaris/guest.rb
@@ -7,7 +7,7 @@ module VagrantPlugins
     # Contributed by Blake Irvin <b.irvin@modcloth.com>
     class Guest < Vagrant.plugin("2", :guest)
       def detect?(machine)
-        machine.communicate.test("grep 'Solaris' /etc/release")
+        machine.communicate.test("uname -o|grep Solaris")
       end
     end
   end