diff --git a/turbinia/evidence.py b/turbinia/evidence.py
index a52d2f557..fbe605c9f 100644
--- a/turbinia/evidence.py
+++ b/turbinia/evidence.py
@@ -1070,6 +1070,8 @@ def _validate(self):
       log.info(f'Running pinfo.py to validate PlasoFile {self.local_path}')
       command = subprocess.run(cmd, capture_output=True, check=True)
       storage_counters_json = command.stdout.decode('utf-8').strip()
+      # pinfo.py might print warnings (non-json) so we only need to last line of output
+      storage_counters_json = storage_counters_json.splitlines()[-1]
       storage_counters = json.loads(storage_counters_json)
       total_file_events = storage_counters.get('storage_counters', {}).get(
           'parsers', {}).get('total', 0)