diff --git a/main.c b/main.c
index 99c6c1e..6b5cfd8 100644
--- a/main.c
+++ b/main.c
@@ -2599,9 +2599,10 @@ int mySerialReadline(unsigned char *buf, int len)
 }
 #endif
 
-// Main thread stack size defined in makefile USE_PROCESS_STACKSIZE = 0x200
-// Profile stack usage (enable threads command by def ENABLE_THREADS_COMMAND) show:
-// Stack maximum usage = 472 bytes (need test more and run all commands), free stack = 40 bytes
+/* Main thread stack size defined in makefile USE_PROCESS_STACKSIZE = 0x200
+ * Profile stack usage (enable threads command by def ENABLE_THREADS_COMMAND) show:
+ *Stack maximum usage = 472 bytes (need test more and run all commands), free stack = 40 bytes
+ */
 
 int main(void)
 {
diff --git a/sa_core.c b/sa_core.c
index 65c64d8..f5a6e1a 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -1799,6 +1799,9 @@ sweep_again:                                // stay in sweep loop when output mo
       }
 #ifdef __DEBUG_AGC__                 // For debugging the AGC control
       stored_t[i] = (SI4432_Read_Byte(0x69) & 0x0f) * 3.0 - 90.0; // Display the AGC value in the stored trace
+#endif
+#ifdef __DEBUG_SPUR__                 // For debugging the spur avoidance control
+      stored_t[i] = (avoid_spur(frequencies[i]) ? -60.0 :  - 90.0); // Display when to do spur shift in the stored trace
 #endif
       if (scandirty || setting.average == AV_OFF) {             // Level calculations
         actual_t[i] = RSSI;
diff --git a/ui_sa.c b/ui_sa.c
index 3357ffd..8b1ee9c 100644
--- a/ui_sa.c
+++ b/ui_sa.c
@@ -1427,7 +1427,7 @@ static const menuitem_t menu_settings[] =
 {
   { MT_CALLBACK | MT_LOW, 5,    "\2LO\0OUTPUT",menu_settings2_cb},
   { MT_KEYPAD, KM_ACTUALPOWER,  "\2ACTUAL\0POWER",  NULL},
-  { MT_KEYPAD | MT_LOW, KM_IF,  "\2IF\0FREQ",       NULL},
+  { MT_KEYPAD | MT_LOW, KM_IF,  "\2IF\0FREQ",       "Set to zero for auto IF"},
   { MT_SUBMENU,0,               "\2SCAN\0SPEED",         menu_scanning_speed},
   { MT_KEYPAD, KM_REPEAT,       "\2SAMPLE\0REPEAT",          "1..100"},
   { MT_SUBMENU | MT_LOW,0,      "\2MIXER\0DRIVE",      menu_drive},