diff --git a/nanovna.h b/nanovna.h
index f98fa2d..c2eafc7 100644
--- a/nanovna.h
+++ b/nanovna.h
@@ -18,7 +18,6 @@
  */
 #include "ch.h"
 
-//#define TINYSA_F303
 #ifdef TINYSA_F303
 #ifdef TINYSA_F072
 #error "Remove comment for #ifdef TINYSA_F303"
@@ -27,7 +26,7 @@
 #define TINYSA4
 #endif
 #define TINYSA4_PROTO
-//#endif
+#endif
 
 #ifdef TINYSA_F072
 #ifdef TINYSA_F303
@@ -220,8 +219,7 @@ typedef uint32_t freq_t;
  #define CORRECTION_LOW_OUT_DIRECT 7
  #define CORRECTION_LOW_OUT_ADF    8
  #define CORRECTION_LOW_OUT_MIXER  9
- #define CORRECTION_HIGH           10
- #define CORRECTION_SIZE           11
+ #define CORRECTION_SIZE           10
 #endif
 typedef float measurement_t[TRACES_MAX][POINTS_COUNT];
 extern measurement_t measured;
diff --git a/sa_cmd.c b/sa_cmd.c
index bc33d55..f58b9d5 100644
--- a/sa_cmd.c
+++ b/sa_cmd.c
@@ -32,6 +32,7 @@ VNA_SHELL_FUNCTION(cmd_mode)
     shell_printf("usage: mode low %s\r\n", cmd_in_out);
 #else
     shell_printf("usage: mode %s %s\r\n", cmd_low_high,cmd_in_out);
+#endif
     return;
   }
 #ifdef TINYSA3
diff --git a/sa_core.c b/sa_core.c
index 231c683..fe9c13d 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -2154,10 +2154,12 @@ pureRSSI_t get_frequency_correction(freq_t f)      // Frequency dependent RSSI c
 {
   pureRSSI_t cv = 0;
   int c=CORRECTION_LOW;
+#ifdef TINYSA3
   if (setting.mode == M_GENHIGH) {
     c = CORRECTION_HIGH;
     return float_TO_PURE_RSSI(0.0);
   }
+#endif
 #ifdef TINYSA4
   if (setting.mode == M_LOW) {