diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index 13ad60299d9c..d464a7bf6bf0 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -2145,7 +2145,7 @@ bool Planner::_populate_block(block_t * const block, bool split_move,
   // Bail if this is a zero-length block
   if (block->step_event_count < MIN_STEPS_PER_SEGMENT) return false;
 
-  TERN_(MIXING_EXTRUDER, mixer.populate_block(block->b_color))
+  TERN_(MIXING_EXTRUDER, mixer.populate_block(block->b_color));
 
 
   #if HAS_FAN