diff --git a/Marlin/src/Marlin.cpp b/Marlin/src/Marlin.cpp
index 2198672ff875..a03d1f396359 100644
--- a/Marlin/src/Marlin.cpp
+++ b/Marlin/src/Marlin.cpp
@@ -553,7 +553,7 @@ void manage_inactivity(const bool ignore_stepper_queue/*=false*/) {
         bool oldstatus;
         switch (active_extruder) {
           default:
-          #define _CASE_EN(N) case N: oldstatus = E##N_ENABLE_READ(); enable_E##N(); break;
+          #define _CASE_EN(N) case N: oldstatus = E##N##_ENABLE_READ(); enable_E##N(); break;
           REPEAT(E_STEPPERS, _CASE_EN);
         }
       #endif