diff --git a/src/mhd2/mhd_locks.h b/src/mhd2/mhd_locks.h
index 734bcd56..1eeef547 100644
--- a/src/mhd2/mhd_locks.h
+++ b/src/mhd2/mhd_locks.h
@@ -135,12 +135,19 @@ typedef CRITICAL_SECTION mhd_mutex;
 
 #if defined(mhd_MUTEX_KIND_PTHREAD)
 #  if defined(PTHREAD_MUTEX_INITIALIZER)
+/**
+ * The value to statically initialise mutex
+ */
+#    define mhd_MUTEX_INITIALISER_STAT       PTHREAD_MUTEX_INITIALIZER
+#  endif /* PTHREAD_MUTEX_INITIALIZER */
+#endif
+
+#ifdef mhd_MUTEX_INITIALISER_STAT
 /**
  *  Define static mutex and statically initialise it.
  */
-#    define MHD_MUTEX_STATIC_DEFN_INIT_(m) \
-        static mhd_mutex m = PTHREAD_MUTEX_INITIALIZER
-#  endif /* PTHREAD_MUTEX_INITIALIZER */
+#  define mhd_MUTEX_STATIC_DEFN_INIT_(m) \
+        static mhd_mutex m = mhd_MUTEX_INITIALISER_STAT
 #endif
 
 #if defined(mhd_MUTEX_KIND_PTHREAD)