diff --git a/daqviewer/daqviewer.py b/daqviewer/daqviewer.py
index 89cdfb9..f0d9842 100644
--- a/daqviewer/daqviewer.py
+++ b/daqviewer/daqviewer.py
@@ -155,8 +155,13 @@ def read_json_data(json_data):
                              figure={
                                  'data': spec,
                                  'layout': {
+                                     'title': 'Energy spectrum',
                                      'xaxis': {
-                                         'range': [0, f_max]
+                                         'range': [0, f_max],
+                                         'title': 'Frequency (Hz)',
+                                     },
+                                     'yaxis': {
+                                         'title': 'Energy (mm^2.s)',
                                      }
                                  }
                              })