diff --git a/src/bpf_tracing.h b/src/bpf_tracing.h
index 03e501a..41a015e 100644
--- a/src/bpf_tracing.h
+++ b/src/bpf_tracing.h
@@ -214,6 +214,8 @@
 #define __PT_RC_REG a5
 #define __PT_SP_REG sp
 #define __PT_IP_REG pc
+/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
 
 #endif