diff --git a/vm/src/vm/runners/builtin_runner/poseidon.rs b/vm/src/vm/runners/builtin_runner/poseidon.rs
index 4c1f350d09..eb231bd5b5 100644
--- a/vm/src/vm/runners/builtin_runner/poseidon.rs
+++ b/vm/src/vm/runners/builtin_runner/poseidon.rs
@@ -79,7 +79,7 @@ impl PoseidonBuiltinRunner {
                     .get_int_ref()
                     .ok_or(RunnerError::BuiltinExpectedInteger(Box::new((
                         BuiltinName::poseidon,
-                        (first_input_addr + i)?,
+                        m_index,
                     ))))?,
                 _ => return Ok(None),
             };