diff --git a/include/linux/fs.h b/include/linux/fs.h
index aad3fd0ff5f8314975c93af81d94b3ce88ddbdda..7251f7bb45e8b80b44f28c2051c5bef8e947e6bb 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2678,7 +2678,7 @@ static const char * const kernel_read_file_str[] = {
 
 static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
 {
-	if (id < 0 || id >= READING_MAX_ID)
+	if ((unsigned)id >= READING_MAX_ID)
 		return kernel_read_file_str[READING_UNKNOWN];
 
 	return kernel_read_file_str[id];