diff --git a/superset/viz.py b/superset/viz.py
index 6b369bedb745..9da2ce5fc5c2 100644
--- a/superset/viz.py
+++ b/superset/viz.py
@@ -787,8 +787,8 @@ def query_obj(self):
         return d
 
     def get_data(self, df):
-        df['x'] = df[[self.x_metric]]
-        df['y'] = df[[self.y_metric]]
+        df['x'] = df[[self.x_metric]].ix[:, 0]
+        df['y'] = df[[self.y_metric]].ix[:, 0]
         df['size'] = df[[self.z_metric]]
         df['shape'] = 'circle'
         df['group'] = df[[self.series]]