diff --git a/Marlin/src/feature/fwretract.cpp b/Marlin/src/feature/fwretract.cpp
index aee775bffff..fff2a1ed395 100644
--- a/Marlin/src/feature/fwretract.cpp
+++ b/Marlin/src/feature/fwretract.cpp
@@ -137,7 +137,7 @@ void FWRetract::retract(const bool retracting E_OPTARG(bool swapping/*=false*/))
     // Retract by moving from a faux E position back to the current E position
     current_retract[active_extruder] = base_retract;
     prepare_internal_move_to_destination(                 // set current from destination
-      settings.retract_feedrate_mm_s * TERN1(RETRACT_SYNC_MIXING, (MIXING_STEPPERS))
+      MUL_TERN(RETRACT_SYNC_MIXING, settings.retract_feedrate_mm_s, MIXING_STEPPERS)
     );
 
     // Is a Z hop set, and has the hop not yet been done?
@@ -165,8 +165,7 @@ void FWRetract::retract(const bool retracting E_OPTARG(bool swapping/*=false*/))
 
     // Recover E, set_current_to_destination
     prepare_internal_move_to_destination(
-      (swapping ? settings.swap_retract_recover_feedrate_mm_s : settings.retract_recover_feedrate_mm_s)
-      * TERN1(RETRACT_SYNC_MIXING, (MIXING_STEPPERS))
+      MUL_TERN(RETRACT_SYNC_MIXING, swapping ? settings.swap_retract_recover_feedrate_mm_s : settings.retract_recover_feedrate_mm_s, MIXING_STEPPERS)
     );
   }
 
diff --git a/Marlin/src/feature/leds/neopixel.h b/Marlin/src/feature/leds/neopixel.h
index 6cc8b6157e8..26f7a07d58d 100644
--- a/Marlin/src/feature/leds/neopixel.h
+++ b/Marlin/src/feature/leds/neopixel.h
@@ -130,7 +130,7 @@ public:
   }
 
   // Accessors
-  static uint16_t pixels() { return adaneo1.numPixels() * TERN1(NEOPIXEL2_INSERIES, 2); }
+  static uint16_t pixels() { return MUL_TERN(NEOPIXEL2_INSERIES, adaneo1.numPixels(), 2); }
 
   static uint32_t pixel_color(const uint16_t n) {
     #if ENABLED(NEOPIXEL2_INSERIES)
diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index 37c344bfe76..ae3b9e50a00 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -2392,14 +2392,12 @@ bool Planner::_populate_block(
     #endif
 
     const feedRate_t cs = ABS(current_speed.e),
-                 max_fr = settings.max_feedrate_mm_s[E_AXIS_N(extruder)]
-                          * TERN(HAS_MIXER_SYNC_CHANNEL, MIXING_STEPPERS, 1);
+                 max_fr = MUL_TERN(HAS_MIXER_SYNC_CHANNEL, settings.max_feedrate_mm_s[E_AXIS_N(extruder)], MIXING_STEPPERS);
 
-    if (cs > max_fr) NOMORE(speed_factor, max_fr / cs); //respect max feedrate on any movement (doesn't matter if E axes only or not)
+    if (cs > max_fr) NOMORE(speed_factor, max_fr / cs); // Respect max feedrate on any move (travel and print)
 
     #if ENABLED(VOLUMETRIC_EXTRUDER_LIMIT)
-      const feedRate_t max_vfr = volumetric_extruder_feedrate_limit[extruder]
-                                 * TERN(HAS_MIXER_SYNC_CHANNEL, MIXING_STEPPERS, 1);
+      const feedRate_t max_vfr = MUL_TERN(HAS_MIXER_SYNC_CHANNEL, volumetric_extruder_feedrate_limit[extruder], MIXING_STEPPERS);
 
       // TODO: Doesn't work properly for joined segments. Set MIN_STEPS_PER_SEGMENT 1 as workaround.
 
diff --git a/Marlin/src/module/planner.h b/Marlin/src/module/planner.h
index e783b0cd0fc..74a587f858c 100644
--- a/Marlin/src/module/planner.h
+++ b/Marlin/src/module/planner.h
@@ -634,7 +634,7 @@ class Planner {
 
     #if HAS_EXTRUDERS
       FORCE_INLINE static void refresh_e_factor(const uint8_t e) {
-        e_factor[e] = flow_percentage[e] * 0.01f * TERN(NO_VOLUMETRICS, 1.0f, volumetric_multiplier[e]);
+        e_factor[e] = flow_percentage[e] * 0.01f IF_DISABLED(NO_VOLUMETRICS, * volumetric_multiplier[e]);
       }
 
       static void set_flow(const uint8_t e, const int16_t flow) {