diff --git a/radio/src/switches.cpp b/radio/src/switches.cpp
index 2ded84b32..9f73b9714 100644
--- a/radio/src/switches.cpp
+++ b/radio/src/switches.cpp
@@ -643,7 +643,7 @@ void checkSwitches()
       evalFlightModeMixes(e_perout_mode_normal, 0);
       bad_pots = 0;
       for (int i=0; i<NUM_POTS; i++) {
-        if (!IS_POT_AVAILABLE(i)) {
+        if (!IS_POT_AVAILABLE(POT1+i)) {
           continue;
         }
         if (!(g_model.potsWarnEnabled & (1 << i)) && (abs(g_model.potsWarnPosition[i] - GET_LOWRES_POT_POSITION(i)) > 1)) {
@@ -704,7 +704,7 @@ void checkSwitches()
           x = 60;
         }
         for (int i=0; i<NUM_POTS; i++) {
-          if (!IS_POT_AVAILABLE(i)) {
+          if (!IS_POT_AVAILABLE(POT1+i)) {
             continue;
           }
           if (!(g_model.potsWarnEnabled & (1 << i))) {