diff --git a/M02_MasterTemplete/M02_San_Link.py b/M02_MasterTemplete/M02_San_Link.py
index 986f4e0b2..747d0115c 100644
--- a/M02_MasterTemplete/M02_San_Link.py
+++ b/M02_MasterTemplete/M02_San_Link.py
@@ -114,7 +114,8 @@ def hourly_text(key: str | None) -> str | None:
     got = dim.hourly_link(key, "노무비")
     if not got:
         return None
-    return f"로직({got['키']}{''.join(f', {k}={v}' for k, v in got['입력'].items())})"
+    args = "".join(f", {dim._q(k)}={v}" for k, v in got["입력"].items())  # 빈칸 든 이름은 따옴표
+    return f"로직({got['키']}{args})"
 
 
 def combo_link(one: dict, parts: list[dict]) -> str | None:
diff --git a/resources/tester/test_820_1_small_machines.py b/resources/tester/test_820_1_small_machines.py
index 24c11c887..5c5b01eae 100644
--- a/resources/tester/test_820_1_small_machines.py
+++ b/resources/tester/test_820_1_small_machines.py
@@ -151,3 +151,23 @@ def test_other_docs_same() -> None:
                 assert pick[0] not in codes, row["키"]
     old = [k for k, r in _eq().items() if k not in NEW]
     assert not [k for k in old if str(_eq()[k].get("원문번호") or "").startswith("자체 ")]
+
+
+def test_blank_input_name_link_roundtrip() -> None:
+    """820-2 — 빈칸 든 입력 이름(「전력 계약종별」)이 이음 글 → 읽기 왕복 · EST main 504 번 = 저장 금액 · 우리 단가 셈."""
+    from M02_MasterTemplete import M02_San_Link as sl
+    from M02_MasterTemplete import M02_Sangeun_Imported as imp
+
+    text = sl.hourly_text("EQ000662")
+    assert "'전력 계약종별'=" in text
+    node = di.dc.cv.mf.parse(text)
+    assert node[0] == "logic" and "전력 계약종별" in [k for k, _ in node[2]]
+    assert imp._link(text, "로직", "시험", imp._whole()) == text
+    import test_810_2_native_doc as t
+
+    out = t.fn.emit(t.native("EST", "main"), 504)
+    sk, _, got = t.doc_and_money(out)
+    assert float(got["계"]) == 546  # 원파일 저장 금액
+    sk[imp.KEY]["단가기준"] = "우리"
+    ours = di.run(di.derive(sk, None, t.whole()), sk, t.whole())
+    assert ours.get("셈됨") is not False and ours["계"] is not None