diff --git a/decode_ft8.cpp b/decode_ft8.cpp
index e147df0..6961790 100644
--- a/decode_ft8.cpp
+++ b/decode_ft8.cpp
@@ -202,7 +202,7 @@ int main(int argc, char **argv) {
 
     // Find top candidates by Costas sync score and localize them in time and frequency
     ft8::Candidate candidate_list[kMax_candidates];
-    int num_candidates = ft8::find_sync(&power, ft8::kCostas_map, kMax_candidates, candidate_list);
+    int num_candidates = ft8::find_sync(&power, ft8::kCostas_map, kMax_candidates, candidate_list, kMin_score);
 
     // TODO: sort the candidates by strongest sync first?
 
diff --git a/utils/run_tests.py b/utils/run_tests.py
index a065282..096c644 100755
--- a/utils/run_tests.py
+++ b/utils/run_tests.py
@@ -19,6 +19,7 @@ n_extra = 0
 n_missed = 0
 n_total = 0
 for wav_file, txt_file in zip(wav_files, txt_files):
+    if not os.path.isfile(txt_file): continue
     print(wav_file)
     result = subprocess.run(['./decode_ft8', wav_file], stdout=subprocess.PIPE)
     result = result.stdout.decode('utf-8').split('\n')