diff --git a/src/system/kernel/fs/fd.cpp b/src/system/kernel/fs/fd.cpp
index b554604871..a7b73c40b9 100644
--- a/src/system/kernel/fs/fd.cpp
+++ b/src/system/kernel/fs/fd.cpp
@@ -297,7 +297,7 @@ get_fd_locked(struct io_context *context, int fd)
 struct file_descriptor *
 get_fd(struct io_context *context, int fd)
 {
-	MutexLocker(context->io_mutex);
+	MutexLocker _(context->io_mutex);
 
 	return get_fd_locked(context, fd);
 }
@@ -306,7 +306,7 @@ get_fd(struct io_context *context, int fd)
 struct file_descriptor *
 get_open_fd(struct io_context *context, int fd)
 {
-	MutexLocker(context->io_mutex);
+	MutexLocker _(context->io_mutex);
 
 	file_descriptor *descriptor = get_fd_locked(context, fd);
 	if (descriptor == NULL)
diff --git a/src/system/kernel/fs/vfs.cpp b/src/system/kernel/fs/vfs.cpp
index 2b39ef8d29..7255eda1e9 100644
--- a/src/system/kernel/fs/vfs.cpp
+++ b/src/system/kernel/fs/vfs.cpp
@@ -4744,13 +4744,15 @@ vfs_free_io_context(io_context* context)
 }
 
 
-void vfs_get_io_context(io_context *context)
+void
+vfs_get_io_context(io_context* context)
 {
 	atomic_add(&context->ref_count, 1);
 }
 
 
-void vfs_put_io_context(io_context *context)
+void
+vfs_put_io_context(io_context* context)
 {
 	if (atomic_add(&context->ref_count, -1) == 1)
 		vfs_free_io_context(context);