diff --git a/main.c b/main.c
index 2d4b40d..cebf470 100644
--- a/main.c
+++ b/main.c
@@ -956,7 +956,7 @@ config_t config = {
   ._xtal_freq = XTALFREQ,
   ._measure_r = MEASURE_DEFAULT_R,
   ._lever_mode = LM_MARKER,
-  ._band_mode = 0,
+  ._band_mode = BOARD_CLOCK_GEN,
 };
 
 properties_t current_props;
diff --git a/si5351.h b/si5351.h
index 8758d35..207bdf4 100644
--- a/si5351.h
+++ b/si5351.h
@@ -19,6 +19,15 @@
  * Boston, MA 02110-1301, USA.
  */
 
+// Define the two hardware clock generator models
+#define SI5351_CLOCK_GEN        0
+#define MS5351_CLOCK_GEN        1
+
+// Make the Si5351 generator the default
+#ifndef BOARD_CLOCK_GEN
+#define BOARD_CLOCK_GEN         SI5351_CLOCK_GEN
+#endif 
+
 #define SI5351_REG_3_OUTPUT_ENABLE_CONTROL  3
 #define SI5351_CLK0_EN     (1<<0)
 #define SI5351_CLK1_EN     (1<<1)
diff --git a/ui.c b/ui.c
index 44b6e73..5dd1830 100644
--- a/ui.c
+++ b/ui.c
@@ -1542,10 +1542,10 @@ static UI_FUNCTION_ADV_CALLBACK(menu_band_sel_acb)
 {
   (void)data;
   if (b){
-    b->p1.text = config._band_mode == 0 ? "Si5351" : "MS5351";
+    b->p1.text = config._band_mode ==  SI5351_CLOCK_GEN ? "Si5351" : "MS5351";
     return;
   }
-  config._band_mode = config._band_mode == 0 ? 1 : 0;
+  config._band_mode = config._band_mode ==  SI5351_CLOCK_GEN ? MS5351_CLOCK_GEN : SI5351_CLOCK_GEN;
   si5351_set_band_mode(config._band_mode);
 }