diff --git a/include/ThreadPool_pthread.h b/include/ThreadPool_pthread.h
index 00aad22..6991abc 100644
--- a/include/ThreadPool_pthread.h
+++ b/include/ThreadPool_pthread.h
@@ -1,5 +1,5 @@
-#ifndef THREADPOOL_H
-#define THREADPOOL_H
+#ifndef THREADPOOL_PTHREAD_H
+#define THREADPOOL_PTHREAD_H
 
 #include <queue>
 #include <vector>
@@ -86,4 +86,4 @@ std::string _to_string(T const& value)
     return sstr.str();
 }
 
-#endif // THREADPOOL_H
+#endif // THREADPOOL_PTHREAD_H