diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index 523bfc094e42..08dce22afec1 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -85,6 +85,6 @@ config PROC_CHILDREN
 config PROC_UID
 	bool "Include /proc/uid/ files"
 	default y
-	depends on PROC_FS
+	depends on PROC_FS && RT_MUTEXES
 	help
 	Provides aggregated per-uid information under /proc/uid.
diff --git a/fs/proc/uid.c b/fs/proc/uid.c
index c0d439a00560..616d99b157c3 100644
--- a/fs/proc/uid.c
+++ b/fs/proc/uid.c
@@ -7,6 +7,7 @@
 #include <linux/hashtable.h>
 #include <linux/init.h>
 #include <linux/proc_fs.h>
+#include <linux/rtmutex.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>