diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 113fc64..cf9f678 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -1182,6 +1182,10 @@ function on_ws_recv(evt)
 						fft_compression = config.fft_compression;
 						divlog( "FFT stream is "+ ((fft_compression=="adpcm")?"compressed":"uncompressed")+"." )
 						max_clients_num = config.max_clients;
+						mathbox_waterfall_colors = config.mathbox_waterfall_colors;
+						mathbox_waterfall_frequency_resolution = config.mathbox_waterfall_frequency_resolution;
+						mathbox_waterfall_history_length = config.mathbox_waterfall_history_length;
+
 						waterfall_init();
 						audio_preinit();
 
diff --git a/owrx/controllers.py b/owrx/controllers.py
index 7d7f63a..366eb3a 100644
--- a/owrx/controllers.py
+++ b/owrx/controllers.py
@@ -83,7 +83,8 @@ class OpenWebRxClient(object):
     config_keys = ["waterfall_colors", "waterfall_min_level", "waterfall_max_level",
                    "waterfall_auto_level_margin", "lfo_offset", "samp_rate", "fft_size", "fft_fps",
                    "audio_compression", "fft_compression", "max_clients", "start_mod",
-                   "client_audio_buffer_size", "start_freq", "center_freq"]
+                   "client_audio_buffer_size", "start_freq", "center_freq", "mathbox_waterfall_colors",
+                   "mathbox_waterfall_history_length", "mathbox_waterfall_frequency_resolution"]
     def __init__(self, conn):
         self.conn = conn