diff --git a/src/common/fastjmp.h b/src/common/fastjmp.h
index c7e84284e..e815d7b85 100644
--- a/src/common/fastjmp.h
+++ b/src/common/fastjmp.h
@@ -21,7 +21,7 @@ struct fastjmp_buf
 #elif defined(_M_IX86) || defined(__i386__)
   static constexpr std::size_t BUF_SIZE = 24;
 #elif defined(__riscv) && __riscv_xlen == 64
-  static constexpr std::size_t BUF_SIZE = 208;
+  static constexpr std::size_t BUF_SIZE = 216;
 #else
 #error Unknown architecture.
 #endif