diff --git a/[refs] b/[refs]
index b89f948f1a77..58d0239ff6e1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 41c79dc3825545d9aa2d5e5b1a99f8faabf51455
+refs/heads/master: ae756df8ddd00a30bb3bdf6774b514c096dda4a4
diff --git a/trunk/arch/um/os-Linux/process.c b/trunk/arch/um/os-Linux/process.c
index d32413e4b4ce..d9c52387c4a1 100644
--- a/trunk/arch/um/os-Linux/process.c
+++ b/trunk/arch/um/os-Linux/process.c
@@ -3,6 +3,7 @@
  * Licensed under the GPL
  */
 
+#include <unistd.h>
 #include <stdio.h>
 #include <errno.h>
 #include <signal.h>