diff --git a/libc/arch-arm/include/machine/cpu-features.h b/libc/arch-arm/include/machine/cpu-features.h
index bf9a75d34..fc8c80dc7 100644
--- a/libc/arch-arm/include/machine/cpu-features.h
+++ b/libc/arch-arm/include/machine/cpu-features.h
@@ -28,14 +28,6 @@
 #ifndef _ARM_MACHINE_CPU_FEATURES_H
 #define _ARM_MACHINE_CPU_FEATURES_H
 
-/* The purpose of this file is to define several macros corresponding
- * to CPU features that may or may not be available at build time on
- * on the target CPU.
- *
- * This is done to abstract us from the various ARM Architecture
- * quirks and alphabet soup.
- */
-
 /* __ARM_ARCH__ is a number corresponding to the ARM revision
  * we're going to support. Our toolchain doesn't define __ARM_ARCH__
  * so try to guess it.
@@ -53,12 +45,4 @@
 #  endif
 #endif
 
-/* define _ARM_HAVE_NEON for ARMv7 architecture if we support the
- * Neon SIMD instruction set extensions. This also implies
- * that VFPv3-D32 is supported.
- */
-#if __ARM_ARCH__ >= 7 && defined __ARM_NEON__
-#  define __ARM_HAVE_NEON
-#endif
-
 #endif /* _ARM_MACHINE_CPU_FEATURES_H */