diff --git a/doc/user_guide/en/decoder_notes.adoc b/doc/user_guide/en/decoder_notes.adoc
index 8f6465dcb..d4f966a69 100644
--- a/doc/user_guide/en/decoder_notes.adoc
+++ b/doc/user_guide/en/decoder_notes.adoc
@@ -74,7 +74,7 @@ summarized in the following Table:
 |JT65 VHF| #            | *, # | f, fN, dNC
 |QRA64   | :            | *    | R
 |ISCAT   |              | *    | M  N  C  T
-|MSK144  | &            |      | N
+|MSK144  | &            |      | N  H  E
 |===========================================
 Sync character::
  `*` - Normal sync +
@@ -85,7 +85,9 @@ End of line information::
  `a` - Decoded with aid of some a priori (AP) information +
  `C` - Confidence indicator [ISCAT and Deep Search; (0-9,*)] +
  `d` - Deep Search algorithm +
+ `E` - Size of MSK eye diagram opening - if negative, the eye is closed + 
  `f` - Franke-Taylor or Fano algorithm +
+ `H` - Number of bit errors corrected +
  `M` - Message length (characters) +
  `N` - Number of Rx intervals or frames averaged +
  `P` - Number indicating type of AP information (Table 1, above) +