diff --git a/drivers/unix/file_access_unix_pipe.cpp b/drivers/unix/file_access_unix_pipe.cpp
index e808c5ded2..9238afe183 100644
--- a/drivers/unix/file_access_unix_pipe.cpp
+++ b/drivers/unix/file_access_unix_pipe.cpp
@@ -43,7 +43,7 @@
 #include <cerrno>
 #include <csignal>
 
-#ifndef sighandler_t
+#ifndef _GNU_SOURCE
 typedef typeof(void(int)) *sighandler_t;
 #endif