diff --git a/Eigen/src/Core/arch/Default/Half.h b/Eigen/src/Core/arch/Default/Half.h
index 7f9e6c1..2bcdf6c 100644
--- a/Eigen/src/Core/arch/Default/Half.h
+++ b/Eigen/src/Core/arch/Default/Half.h
@@ -391,7 +391,7 @@
 }
 #endif
 
-#if defined(EIGEN_HAS_ARM64_FP16_SCALAR_ARITHMETIC)
+#if defined(EIGEN_HAS_ARM64_FP16_SCALAR_ARITHMETIC) && !defined(EIGEN_GPU_COMPILE_PHASE)
 EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC half operator + (const half& a, const half& b) {
   return half(vaddh_f16(a.x, b.x));
 }