diff --git a/src/CountingSemaphore.hh b/src/CountingSemaphore.hh
index 3c2a975..c3d22b8 100644
--- a/src/CountingSemaphore.hh
+++ b/src/CountingSemaphore.hh
@@ -1,8 +1,8 @@
 // This file is under GNU General Public License 3.0
 // see LICENSE.txt
 
-#ifndef LIBPEPADAPTER_SEMAPHORE_HH
-#define LIBPEPADAPTER_SEMAPHORE_HH
+#ifndef LIBPEPADAPTER_COUNTING_SEMAPHORE_HH
+#define LIBPEPADAPTER_COUNTING_SEMAPHORE_HH
 
 #include <mutex>
 #include <condition_variable>
@@ -56,4 +56,4 @@ namespace pEp {
     };
 } // namespace pEp
 
-#endif // LIBPEPADAPTER_SEMAPHORE_HH
+#endif // LIBPEPADAPTER_COUNTING_SEMAPHORE_HH