diff --git a/Marlin/src/module/planner.cpp b/Marlin/src/module/planner.cpp
index 8bbb8830018f5..d4e5be306eea6 100644
--- a/Marlin/src/module/planner.cpp
+++ b/Marlin/src/module/planner.cpp
@@ -1961,7 +1961,7 @@ bool Planner::_populate_block(
   #if ANY(CORE_IS_XY, MARKFORGED_XY, MARKFORGED_YX)
     if (da < 0) SBI(dm, X_HEAD);                  // Save the toolhead's true direction in X
     if (db < 0) SBI(dm, Y_HEAD);                  // ...and Y
-    if (dc < 0) SBI(dm, Z_AXIS);
+    TERN_(HAS_Z_AXIS, if (dc < 0) SBI(dm, Z_AXIS));
   #endif
   #if IS_CORE
     #if CORE_IS_XY
@@ -2085,7 +2085,7 @@ bool Planner::_populate_block(
   #if ANY(CORE_IS_XY, MARKFORGED_XY, MARKFORGED_YX)
     steps_dist_mm.head.x = da * mm_per_step[A_AXIS];
     steps_dist_mm.head.y = db * mm_per_step[B_AXIS];
-    steps_dist_mm.z      = dc * mm_per_step[Z_AXIS];
+    TERN_(HAS_Z_AXIS, steps_dist_mm.z = dc * mm_per_step[Z_AXIS]);
   #endif
   #if IS_CORE
     #if CORE_IS_XY
@@ -2270,7 +2270,7 @@ bool Planner::_populate_block(
       stepper.enable_axis(X_AXIS);
       stepper.enable_axis(Y_AXIS);
     }
-    #if DISABLED(Z_LATE_ENABLE)
+    #if HAS_Z_AXIS && DISABLED(Z_LATE_ENABLE)
       if (block->steps.z) stepper.enable_axis(Z_AXIS);
     #endif
   #elif CORE_IS_XZ
diff --git a/Marlin/src/module/stepper.cpp b/Marlin/src/module/stepper.cpp
index ed23b93e44f54..e5d2bcd3586be 100644
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@@ -3112,7 +3112,7 @@ void Stepper::_set_position(const abce_long_t &spos) {
     #if CORE_IS_XY
       // corexy positioning
       // these equations follow the form of the dA and dB equations on https://www.corexy.com/theory.html
-      count_position.set(spos.a + spos.b, CORESIGN(spos.a - spos.b), spos.c);
+      count_position.set(spos.a + spos.b, CORESIGN(spos.a - spos.b) OPTARG(HAS_Z_AXIS, spos.c));
     #elif CORE_IS_XZ
       // corexz planning
       count_position.set(spos.a + spos.c, spos.b, CORESIGN(spos.a - spos.c));