diff --git a/libc/include/llvm-libc-macros/float16-macros.h b/libc/include/llvm-libc-macros/float16-macros.h
index 9f17503d85130c..3f819ad53df71e 100644
--- a/libc/include/llvm-libc-macros/float16-macros.h
+++ b/libc/include/llvm-libc-macros/float16-macros.h
@@ -10,7 +10,8 @@
 #define LLVM_LIBC_MACROS_FLOAT16_MACROS_H
 
 #if defined(__FLT16_MANT_DIG__) &&                                             \
-    (!defined(__GNUC__) || __GNUC__ >= 13 || defined(__clang__))
+    (!defined(__GNUC__) || __GNUC__ >= 13 || defined(__clang__)) &&            \
+    !defined(__riscv)
 #define LIBC_TYPES_HAS_FLOAT16
 #endif