diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 924bfb7..18b3f50 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -42,8 +42,8 @@
 	struct addr_location al;
 	struct sample_data data = { .period = 1, };
 
-	dump_printf("(IP, %d): %d: %p\n", event->header.misc,
-		    event->ip.pid, (void *)(long)event->ip.ip);
+	dump_printf("(IP, %d): %d: %#Lx\n", event->header.misc,
+		    event->ip.pid, event->ip.ip);
 
 	if (event__preprocess_sample(event, session, &al, NULL) < 0) {
 		pr_warning("problem processing %d event, skipping it.\n",