From d56fbe21fcedf8c14f359568f8f9e746938e80dd Mon Sep 17 00:00:00 2001
From: Harald Wagener <oliof@pm.me>
Date: Sat, 6 Dec 2025 20:42:52 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=A9=B9=20Fix=20FTM=20without=20FTM=5FPOLY?=
 =?UTF-8?q?S=20build=20(#28209)?=
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---
 Marlin/src/module/ft_motion.cpp | 6 ++----
 Marlin/src/module/ft_motion.h   | 2 +-
 buildroot/tests/STM32F103RC_btt | 3 ++-
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/Marlin/src/module/ft_motion.cpp b/Marlin/src/module/ft_motion.cpp
index d402439c04..a2e0b8be70 100644
--- a/Marlin/src/module/ft_motion.cpp
+++ b/Marlin/src/module/ft_motion.cpp
@@ -302,10 +302,8 @@ void FTMotion::init() {
     switch (type) {
       default:
       case TrajectoryType::TRAPEZOIDAL: currentGenerator = &trapezoidalGenerator; break;
-      #if ENABLED(FTM_POLYS)
-        case TrajectoryType::POLY5: currentGenerator = &poly5Generator; break;
-        case TrajectoryType::POLY6: currentGenerator = &poly6Generator; break;
-      #endif
+      case TrajectoryType::POLY5:       currentGenerator = &poly5Generator;       break;
+      case TrajectoryType::POLY6:       currentGenerator = &poly6Generator;       break;
     }
   }
 
diff --git a/Marlin/src/module/ft_motion.h b/Marlin/src/module/ft_motion.h
index 497c04e474..a149057547 100644
--- a/Marlin/src/module/ft_motion.h
+++ b/Marlin/src/module/ft_motion.h
@@ -238,7 +238,7 @@ class FTMotion {
       static TrajectoryType trajectoryType;
       static TrajectoryGenerator* currentGenerator;
     #else
-      static constexpr TrajectoryGenerator *currentGenerator = trapezoidalGenerator;
+      static constexpr TrajectoryGenerator *currentGenerator = &trapezoidalGenerator;
     #endif
 
     #if FTM_HAS_LIN_ADVANCE
diff --git a/buildroot/tests/STM32F103RC_btt b/buildroot/tests/STM32F103RC_btt
index 369fa80978..7a03dd64fa 100755
--- a/buildroot/tests/STM32F103RC_btt
+++ b/buildroot/tests/STM32F103RC_btt
@@ -17,4 +17,5 @@ opt_enable CR10_STOCKDISPLAY PINS_DEBUGGING Z_IDLE_HEIGHT EDITABLE_HOMING_CURREN
            INPUT_SHAPING_X INPUT_SHAPING_Y FT_MOTION FT_MOTION_MENU FTM_RESONANCE_TEST EMERGENCY_PARSER \
            BIQU_MICROPROBE_V1 PROBE_ENABLE_DISABLE Z_SAFE_HOMING AUTO_BED_LEVELING_BILINEAR \
            ADAPTIVE_STEP_SMOOTHING LIN_ADVANCE SMOOTH_LIN_ADVANCE NONLINEAR_EXTRUSION
-exec_test $1 $2 "BigTreeTech SKR Mini E3 1.0 - TMC2209 HW Serial, FT_MOTION" "$3"
+opt_disable FTM_POLYS
+exec_test $1 $2 "BigTreeTech SKR Mini E3 1.0 - TMC2209 HW Serial, FT_MOTION w/out FTM_POLYS" "$3"