diff --git a/fs/eventfd.c b/fs/eventfd.c
index ce8fa15cebe50508f4186553f33e3cf77ae41091..93b1fa7bb2984a88be622f97a7c462b25c8871c0 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -23,7 +23,7 @@
 #include <linux/seq_file.h>
 #include <linux/idr.h>
 
-DEFINE_IDA(eventfd_ida);
+static DEFINE_IDA(eventfd_ida);
 
 struct eventfd_ctx {
 	struct kref kref;