diff --git a/arch/um/os-Linux/sys-i386/tls.c b/arch/um/os-Linux/sys-i386/tls.c
index ba21f0e04a2f..120abbe4e3ce 100644
--- a/arch/um/os-Linux/sys-i386/tls.c
+++ b/arch/um/os-Linux/sys-i386/tls.c
@@ -1,3 +1,4 @@
+#include <errno.h>
 #include <linux/unistd.h>
 #include "sysdep/tls.h"
 #include "user_util.h"
diff --git a/arch/um/sys-i386/tls.c b/arch/um/sys-i386/tls.c
index a3188e861cc7..71b9796258ef 100644
--- a/arch/um/sys-i386/tls.c
+++ b/arch/um/sys-i386/tls.c
@@ -378,7 +378,7 @@ static int __init __setup_host_supports_tls(void) {
 	} else
 		printk(KERN_ERR "  Host TLS support NOT detected! "
 				"TLS support inside UML will not work\n");
-	return 1;
+	return 0;
 }
 
 __initcall(__setup_host_supports_tls);