diff --git a/sys/arm64/include/frame.h b/sys/arm64/include/frame.h
--- a/sys/arm64/include/frame.h
+++ b/sys/arm64/include/frame.h
@@ -51,11 +51,6 @@
 	uint64_t tf_x[30];
 };
 
-struct arm64_frame {
-	struct arm64_frame	*f_frame;
-	u_long			f_retaddr;
-};
-
 /*
  * Signal frame, pushed onto the user stack.
  */
diff --git a/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c b/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c
--- a/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c
+++ b/sys/cddl/dev/dtrace/aarch64/dtrace_isa.c
@@ -133,7 +133,7 @@
 			break;
 
 		pc = dtrace_fuword64((void *)(fp +
-		    offsetof(struct arm64_frame, f_retaddr)));
+		    offsetof(struct unwind_state, pc)));
 		fp = dtrace_fuword64((void *)fp);
 
 		if (fp == oldfp) {