1 files changed, 2 insertions, 1 deletions
diff --git a/compile.c b/compile.c
index ea6b74d18d..139a778471 100644
--- a/compile.c
+++ b/compile.c
@@ -2730,7 +2730,8 @@ iseq_peephole_optimize(rb_iseq_t *iseq, LINK_ELEMENT *list, const int do_tailcal
 	    ELEM_INSERT_NEXT(&dniobj->link, &pop->link);
 	    goto again;
 	}
-	else if ((piobj = (INSN *)get_prev_insn(iobj)) != 0 &&
+	else if (IS_INSN(iobj->link.prev) &&
+                 (piobj = (INSN *)iobj->link.prev) &&
 		 (IS_INSN_ID(piobj, branchif) ||
 		  IS_INSN_ID(piobj, branchunless))) {
 	    INSN *pdiobj = (INSN *)get_destination_insn(piobj);