diff --git a/doc/user_guide/en/decoder_notes.adoc b/doc/user_guide/en/decoder_notes.adoc
index cbdf89fab..4bcedd490 100644
--- a/doc/user_guide/en/decoder_notes.adoc
+++ b/doc/user_guide/en/decoder_notes.adoc
@@ -38,7 +38,7 @@ uses information from the previous Rx sequence.
 |a4|MyCall DxCall RRR
 |a5|MyCall DxCall 73
 |a6|MyCall DxCall RR73
-|a7|Call_1 Call_2       ?
+|a7|(Call_1 or CQ) Call_2       ?
 |===
 
 If a codeword is found that is judged to have high (but not