diff --git a/WordNetRus.gf b/WordNetRus.gf
index 4ff064a20..79fa1a424 100644
--- a/WordNetRus.gf
+++ b/WordNetRus.gf
@@ -64374,7 +64374,7 @@ lin munition_V2 = variants {} ;
 lin munj_1_N = variants {} ;
 lin munster_LN = mkLN "Манстер" ;
 lin muntjac_N = mkN "мунтжак" ;
-lin muon_N = mkN "мюон" (mkA "антимюонный") ; --guessed
+lin muon_N = mkN "мюон" (mkA "антимюонный") ;
 lin muonio_LN = mkLN "Муонио" ; --guessed
 lin mural_A = mkA "стенной" "1b" ; --guessed
 lin mural_N = compoundN (mkA "стенной" "1b") (mkN "роспись" feminine inanimate "8a") ; --guessed