diff --git a/androscalpel/src/code_analysis/method_cfg.rs b/androscalpel/src/code_analysis/method_cfg.rs
index 61335c7..7ba060e 100644
--- a/androscalpel/src/code_analysis/method_cfg.rs
+++ b/androscalpel/src/code_analysis/method_cfg.rs
@@ -247,8 +247,8 @@ impl<'a> MethodCFG<'a> {
                 format!("{{\\< {block_name} \\>}}")
             } else {
                 let mut label = format!("{{\\< {block_name} \\>:\\l\\\n");
-                for ins in node.code_block {
-                    label += "|";
+                for (i, ins) in node.code_block.iter().enumerate() {
+                    label += &format!("|<i{i}>");
                     label += ins
                         .__str__()
                         .replace(" ", "\\ ")