diff --git a/Marlin/src/module/configuration_store.cpp b/Marlin/src/module/configuration_store.cpp
index 57a9742010..ddea9388b1 100644
--- a/Marlin/src/module/configuration_store.cpp
+++ b/Marlin/src/module/configuration_store.cpp
@@ -1145,7 +1145,7 @@ void MarlinSettings::postprocess() {
         EEPROM_WRITE(planner.extruder_advance_K);
       #else
         dummy = 0;
-        for (uint8_t q = _MIN(EXTRUDERS, 1); q--;) EEPROM_WRITE(dummy);
+        for (uint8_t q = _MAX(EXTRUDERS, 1); q--;) EEPROM_WRITE(dummy);
       #endif
     }
 
@@ -1934,7 +1934,7 @@ void MarlinSettings::postprocess() {
       // Linear Advance
       //
       {
-        float extruder_advance_K[_MIN(EXTRUDERS, 1)];
+        float extruder_advance_K[_MAX(EXTRUDERS, 1)];
         _FIELD_TEST(planner_extruder_advance_K);
         EEPROM_READ(extruder_advance_K);
         #if ENABLED(LIN_ADVANCE)