diff --git a/Custom-Formats.md b/Custom-Formats.md
index afec418..3a798a7 100644
--- a/Custom-Formats.md
+++ b/Custom-Formats.md
@@ -67,7 +67,7 @@ How does Radarr decide if a custom format matches a release or not?
 
 Radarr uses the following steps to find the best matching quality or custom format:
 1. Go through each custom format and find out which Format Tags match and which don't
-2. Discard all custom formats, where an absolutely required Format Tag (_RE_) does not match
+2. Discard all custom formats, where an absolutely required Format Tag (_RQ_) does not match
 3. Discard all custom formats, where at least one Format Tag of a type is present and none of the tags of this type match. Examples:
     * S_Bluray (NO MATCH), R_1080 (MATCH) Will be discarded, since a source tag is present, but none of the source tags match
     * S_Bluray (NO MATCH), S_WEBDL (MATCH), R_1080 (MATCH) Will not be discarded, since at least one of the source tags matches