diff --git a/tools/testing/selftests/firmware/fw_namespace.c b/tools/testing/selftests/firmware/fw_namespace.c
index 4c6f0cd83c5b..04757dc7e546 100644
--- a/tools/testing/selftests/firmware/fw_namespace.c
+++ b/tools/testing/selftests/firmware/fw_namespace.c
@@ -17,10 +17,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-#ifndef CLONE_NEWNS
-# define CLONE_NEWNS 0x00020000
-#endif
-
 static char *fw_path = NULL;
 
 static void die(char *fmt, ...)