diff --git a/seinflux.py b/seinflux.py
index 859fdbf..6300492 100644
--- a/seinflux.py
+++ b/seinflux.py
@@ -293,7 +293,7 @@ class SEHistory(InfluxDBWrapper):
                 else:
                     instrument = row[-1]
                 key = ('stream', stream) if instrument == '0' else ('instrument', instrument)
-                by_key.setdefault(key, []).append(rows)
+                by_key.setdefault(key, []).append(row)
         result = {}
         for key, rows in by_key.items():
             devices = {}