diff --git a/platypush/backend/google/fit.py b/platypush/backend/google/fit.py
index cebfaea3..7f8cbd52 100644
--- a/platypush/backend/google/fit.py
+++ b/platypush/backend/google/fit.py
@@ -1,3 +1,4 @@
+import datetime
 import time
 
 from platypush.backend import Backend
@@ -63,7 +64,7 @@ class GoogleFitBackend(Backend):
         while not self.should_stop():
             new_last_timestamp = last_timestamp
             self.logger.info('Scanning fit data source, last seen timestamp: {}'.
-                             format(last_timestamp))
+                             format(str(datetime.datetime.fromtimestamp(last_timestamp))))
 
             for data_source in self.data_sources:
                 data_source_last_timestamp = 0
@@ -92,7 +93,7 @@ class GoogleFitBackend(Backend):
 
                 self.logger.info('Got {} entries from data source {}, last timestamp: {}'.
                                  format(len(data_points), data_source,
-                                        data_source_last_timestamp))
+                                        str(datetime.datetime.fromtimestamp(data_source_last_timestamp))))
 
 
             last_timestamp = new_last_timestamp