diff --git a/metrics/chrF.py b/metrics/chrF.py
index 8ae048c8e716b5b804e475422cb5e8eaa3090b12..53894ae9e750a2fd76c76570a8c636b61d96d4f7 100644
--- a/metrics/chrF.py
+++ b/metrics/chrF.py
@@ -125,9 +125,7 @@ def computeChrF(fpRef, fpHyp, nworder, ncorder, beta, sentence_level_scores = No
         nsent += 1
         
         # preparation for multiple references
-        maxF = 0.0
-        bestWordMatchingCount = None
-        bestCharMatchingCount = None
+        maxF = -1
         
         hypNgramCounts = ngram_counts(separate_punctuation(hline), nworder)
         hypChrNgramCounts = ngram_counts(separate_characters(hline), ncorder)
diff --git a/requirements.txt b/requirements.txt
index 456998d918890453c86eab004289ef02913b9566..35158f474f3533032feb670b89126337e9688fd8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ nltk==3.5
 pyter3==0.3
 razdel==0.5.0
 tabulate==0.8.7
-bert-score==0.3.1
\ No newline at end of file
+bert-score==0.3.5
\ No newline at end of file