diff --git a/libc/include/llvm-libc-macros/float16-macros.h b/libc/include/llvm-libc-macros/float16-macros.h
index 3f819ad53df71e..e7d8d93bca1b60 100644
--- a/libc/include/llvm-libc-macros/float16-macros.h
+++ b/libc/include/llvm-libc-macros/float16-macros.h
@@ -11,7 +11,7 @@
 
 #if defined(__FLT16_MANT_DIG__) &&                                             \
     (!defined(__GNUC__) || __GNUC__ >= 13 || defined(__clang__)) &&            \
-    !defined(__riscv)
+    !defined(__arm__) && !defined(_M_ARM) && !defined(__riscv)
 #define LIBC_TYPES_HAS_FLOAT16
 #endif