diff --git a/src/serializers/infer.rs b/src/serializers/infer.rs
index bdfa74b52..a188f6f60 100644
--- a/src/serializers/infer.rs
+++ b/src/serializers/infer.rs
@@ -285,8 +285,7 @@ pub(crate) fn infer_to_python_known(
             }
             ObType::Complex => {
                 let v = value.downcast::<PyComplex>()?;
-                let complex_str = type_serializers::complex::complex_to_str(v);
-                complex_str.into_py(py)
+                v.into_py(py)
             }
             ObType::Unknown => {
                 if let Some(fallback) = extra.fallback {
diff --git a/tests/serializers/test_complex.py b/tests/serializers/test_complex.py
index e7c98246a..2805ab3bd 100644
--- a/tests/serializers/test_complex.py
+++ b/tests/serializers/test_complex.py
@@ -37,3 +37,9 @@ def test_complex_json(value, expected):
         assert math.isnan(c.real)
     else:
         assert c.imag == value.imag
+
+
+def test_complex_inference() -> None:
+    s = SchemaSerializer(core_schema.any_schema())
+    assert s.to_python(1 + 2j) == 1 + 2j
+    assert s.to_json(1 + 2j) == b'"1+2j"'