diff --git a/influxdb/_dataframe_client.py b/influxdb/_dataframe_client.py
index ef1fa78f..4b96250f 100644
--- a/influxdb/_dataframe_client.py
+++ b/influxdb/_dataframe_client.py
@@ -140,7 +140,7 @@ def query(self, query, chunked=False, database=None):
 
         """
         results = super(DataFrameClient, self).query(query, database=database)
-        if query.upper().startswith("SELECT"):
+        if query.strip().upper().startswith("SELECT"):
             if len(results) > 0:
                 return self._to_dataframe(results)
             else: