diff --git a/src/lib/libc/sys/riscv/include/ieeefp.h b/src/lib/libc/sys/riscv/include/ieeefp.h
index ed7381d..44a1c00 100644
--- src/lib/libc/sys/riscv/include/ieeefp.h
+++ src/lib/libc/sys/riscv/include/ieeefp.h
@@ -4,5 +4,6 @@
 #define	_MACHINE_IEEEFP_H_
 
 /* TODO */
+typedef int fp_except;
 
 #endif /* _MACHINE_IEEEFP_H_ */
