diff --git a/sync_queue.hpp b/sync_queue.hpp
index 5be6b1b..2193595 100644
--- a/sync_queue.hpp
+++ b/sync_queue.hpp
@@ -1,10 +1,10 @@
 //
-//  Sync_queue.h
+//  sync_queue.h
 //  adapted from an example from Bjarne Stroustrup
 //
 
-#ifndef __Sync_queue__
-#define __Sync_queue__
+#ifndef __sync_queue__
+#define __sync_queue__
 
 #include <mutex>
 #include <condition_variable>
@@ -15,7 +15,7 @@
 namespace sc {
 
 	template<typename T>
-	class Sync_queue {
+	class sync_queue {
 	public:
 		void put(const T& val)
 		{
@@ -41,4 +41,4 @@ namespace sc {
 
 }
 
-#endif /* defined(__Sync_queue__) */
+#endif /* defined(__sync_queue__) */