diff --git a/sim/src/tlv.rs b/sim/src/tlv.rs
index 39bb1b6..32e006f 100644
--- a/sim/src/tlv.rs
+++ b/sim/src/tlv.rs
@@ -291,9 +291,8 @@
 
                 // The dependency.
                 protected_tlv.push(dep.id);
-                for _ in 0 .. 3 {
-                    protected_tlv.push(0);
-                }
+                protected_tlv.push(0);
+                protected_tlv.write_u16::<LittleEndian>(0).unwrap();
                 protected_tlv.push(dep.version.major);
                 protected_tlv.push(dep.version.minor);
                 protected_tlv.write_u16::<LittleEndian>(dep.version.revision).unwrap();