diff --git a/wpimath/src/main/native/cpp/spline/SplineParameterizer.cpp b/wpimath/src/main/native/cpp/spline/SplineParameterizer.cpp
deleted file mode 100644
index 73c475b535..0000000000
--- a/wpimath/src/main/native/cpp/spline/SplineParameterizer.cpp
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright (c) FIRST and other WPILib contributors.
-// Open Source Software; you can modify and/or share it under the terms of
-// the WPILib BSD license file in the root directory of this project.
-
-#include "frc/spline/SplineParameterizer.h"
-
-constexpr units::meter_t frc::SplineParameterizer::kMaxDx;
-constexpr units::meter_t frc::SplineParameterizer::kMaxDy;
-constexpr units::radian_t frc::SplineParameterizer::kMaxDtheta;
diff --git a/wpimath/src/main/native/include/frc/spline/SplineParameterizer.h b/wpimath/src/main/native/include/frc/spline/SplineParameterizer.h
index 1b49656d6a..46bfc7148f 100644
--- a/wpimath/src/main/native/include/frc/spline/SplineParameterizer.h
+++ b/wpimath/src/main/native/include/frc/spline/SplineParameterizer.h
@@ -127,9 +127,9 @@ class WPILIB_DLLEXPORT SplineParameterizer {
 
  private:
   // Constraints for spline parameterization.
-  static constexpr units::meter_t kMaxDx = 5_in;
-  static constexpr units::meter_t kMaxDy = 0.05_in;
-  static constexpr units::radian_t kMaxDtheta = 0.0872_rad;
+  static inline constexpr units::meter_t kMaxDx = 5_in;
+  static inline constexpr units::meter_t kMaxDy = 0.05_in;
+  static inline constexpr units::radian_t kMaxDtheta = 0.0872_rad;
 
   struct StackContents {
     double t0;