diff --git a/sys/arm64/arm64/machdep.c b/sys/arm64/arm64/machdep.c
index 0bae648c8d2..d41bae02c0b 100644
--- a/sys/arm64/arm64/machdep.c
+++ b/sys/arm64/arm64/machdep.c
@@ -413,7 +413,7 @@ ptrace_set_pc(struct thread *td, u_long addr)
 {
 
 	td->td_frame->tf_elr = addr;
-	return (EDOOFUS);
+	return (0);
 }
 
 int