diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index a37032bd137d7a30b3d298385c4475f25c5fa525..bfb2f1d393d5e4b5cb9b6f77b9c47d37bb78b775 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -130,6 +130,12 @@ static struct arch architectures[] = {
 		.name = "powerpc",
 		.init = powerpc__annotate_init,
 	},
+	{
+		.name = "s390",
+		.objdump =  {
+			.comment_char = '#',
+		},
+	},
 };
 
 static void ins__delete(struct ins_operands *ops)