diff --git a/common/ngram-mod.h b/common/ngram-mod.h
index 29227f8467..f18f005d22 100644
--- a/common/ngram-mod.h
+++ b/common/ngram-mod.h
@@ -18,7 +18,7 @@ struct common_ngram_mod {
     static constexpr int8_t SCORE_INIT = 0;
     static constexpr int8_t SCORE_MIN  = -5;
     static constexpr int8_t SCORE_MAX  = 20;
-    static constexpr int8_t SCORE_THR  = 0; // keep equal or lower than SCORE_INIT
+    static constexpr int8_t SCORE_THR  = 0;
     static constexpr int8_t SCORE_INS  = 3;
 
     common_ngram_mod(uint16_t n, size_t size);