diff --git a/man4/loop.4 b/man4/loop.4
index 74858da7a..d95c38e77 100644
--- a/man4/loop.4
+++ b/man4/loop.4
@@ -89,7 +89,8 @@ struct loop_info {
     int           lo_offset;
     int           lo_encrypt_type;
     int           lo_encrypt_key_size;  /* ioctl w/o */
-    int           lo_flags;       /* ioctl r/o */
+    int           lo_flags;       /* ioctl r/w (r/o before
+                                     Linux 2.6.25) */
     char          lo_name[LO_NAME_SIZE];
     unsigned char lo_encrypt_key[LO_KEY_SIZE];
                                   /* ioctl w/o */
@@ -197,7 +198,8 @@ struct loop_info64 {
     uint32_t lo_number;           /* ioctl r/o */
     uint32_t lo_encrypt_type;
     uint32_t lo_encrypt_key_size; /* ioctl w/o */
-    uint32_t lo_flags;            /* ioctl r/o */
+    uint32_t lo_flags; i          /* ioctl r/w (r/o before
+                                     Linux 2.6.25) */
     uint8_t  lo_file_name[LO_NAME_SIZE];
     uint8_t  lo_crypt_name[LO_NAME_SIZE];
     uint8_t  lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */