diff --git a/exporter.py b/exporter.py
index 91452f9..2d8bad0 100755
--- a/exporter.py
+++ b/exporter.py
@@ -276,7 +276,7 @@ def collect(self):
             )
         finally:
             logging.info('waiting {}s before next collection cycle'.format(self.__collect_interval_seconds))
-            time.sleep(self.__collect_interval_seconds)
+            time.sleep(int(self.__collect_interval_seconds))
 
 
 if __name__ == '__main__':