format: Mypy fix

1 files changed, 5 insertions, 2 deletions

diff --git a/sec_certs/model/dependency_vulnerability_finder.py b/sec_certs/model/dependency_vulnerability_finder.py
index 5eac59a8..9bed05b0 100644
--- a/sec_certs/model/dependency_vulnerability_finder.py
+++ b/sec_certs/model/dependency_vulnerability_finder.py
@@ -55,9 +55,12 @@ class DependencyVulnerabilityFinder:
         dataset_cert_id_occurrences = self._get_dataset_cert_ids()
 
         for cert_id in references:
-            cert_id_occurrences = dataset_cert_id_occurrences.get(cert_id, None)
+            if cert_id is None:
+                continue
+
+            cert_id_occurrences = dataset_cert_id_occurrences.get(cert_id)
 
-            if cert_id is None or cert_id_occurrences >= 2:
+            if cert_id_occurrences is None or cert_id_occurrences >= 2:
                 continue
 
             for dgst in self.certificates: