diff --git a/restic_exporter/restic_exporter.py b/restic_exporter/restic_exporter.py
index 006f360..ea89e02 100644
--- a/restic_exporter/restic_exporter.py
+++ b/restic_exporter/restic_exporter.py
@@ -57,7 +57,8 @@ class restic_exporter:
         print(f"# HELP {self.metric_name} {self.metric_description}.")
         print(f"# TYPE {self.metric_name} counter")
         for counter in counters:
-            print(f"{self.metric_name}_{counter}{labels} {float(self.summary[counter])} {self.summary['timestamp']}")
+            if counter in self.summary:
+                print(f"{self.metric_name}_{counter}{labels} {float(self.summary[counter])} {self.summary['timestamp']}")
 
     def _read_summary_from_json(self, json_file):
         try: