diff --git a/src/model_menus.cpp b/src/model_menus.cpp
index f981f58e7..bd2f570b5 100644
--- a/src/model_menus.cpp
+++ b/src/model_menus.cpp
@@ -1869,10 +1869,10 @@ void menuProcLimits(uint8_t event)
 
   MENU(STR_MENULIMITS, menuTabModel, e_Limits, 1+NUM_CHNOUT+1, {0, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, LIMITS_ITEMS_COUNT, 0});
 
-  int8_t sub = m_posVert - 1;
+  uint8_t sub = m_posVert - 1;
 
 #ifdef PPM_CENTER_ADJUSTABLE
-  if (sub >= 0) {
+  if (sub < NUM_CHNOUT) {
     lcd_outdezAtt(12*FW, 0, PPM_CENTER+g_model.servoCenter[sub]+g_chans512[sub]/2, 0);
     lcd_puts(12*FW, 0, STR_US);
   }