diff --git a/.github/scripts/typos.toml b/.github/scripts/typos.toml
index afd73e96a4..3f13afa0be 100644
--- a/.github/scripts/typos.toml
+++ b/.github/scripts/typos.toml
@@ -7,7 +7,7 @@ extend-ignore-identifiers-re = [
   "^(ba|pn|PN|UE)$",
   "^(CNA|ser)$",
   "^(ECT0|ECT1|HELO|htpt|PASE)$",
-  "^0x[0-9a-fA-F]+FUL$",
+  "^0x[0-9a-fA-F]+FUL$",  # unsigned long hex literals ending with 'F'
   "^(Januar|eyeballers|HELO_smtp|kno22|optin|passin|perfec|__SecURE|SMTP_HELO|v_alue)$",
   "^(clen|req_clen|smtp_perform_helo|smtp_state_helo_resp|_stati64)$",
 ]