diff --git a/src/smorg/integrations/linear/source.py b/src/smorg/integrations/linear/source.py
index 0f69c97..9ecb9a7 100644
--- a/src/smorg/integrations/linear/source.py
+++ b/src/smorg/integrations/linear/source.py
@@ -567,12 +567,9 @@ def _estimate_of(raw: dict[str, Any]) -> str:
     estimate = raw.get("estimate")
     if estimate is None:
         return ""
-    if isinstance(estimate, bool) or not isinstance(estimate, (int, float)):
-        raise Malformed(f"'estimate' was {type(estimate).__name__}, expected a number")
-    is_whole = float(estimate).is_integer()
-    if is_whole:
-        return str(int(estimate))
-    return str(estimate)
+    if not isinstance(estimate, dict):
+        raise Malformed(f"'estimate' was {type(estimate).__name__}, expected an object")
+    return optional_string(estimate, "name")
 
 
 def _due_date_of(raw: dict[str, Any]) -> str:
diff --git a/tests/integrations/linear/fixtures/linear_issue_detail.json b/tests/integrations/linear/fixtures/linear_issue_detail.json
index 5fd27e3..3ecf8a6 100644
--- a/tests/integrations/linear/fixtures/linear_issue_detail.json
+++ b/tests/integrations/linear/fixtures/linear_issue_detail.json
@@ -15,7 +15,7 @@
     "project": "Improve Redis Scalability",
     "projectMilestone": {"id": "m1", "name": "Reduce forever data"},
     "dueDate": "2026-09-30",
-    "estimate": 3,
+    "estimate": {"value": 3, "name": "M"},
     "parentId": "ENG-0",
     "attachments": [
       {"id": "a1", "title": "chore: widen the column", "subtitle": null, "url": "https://github.com/x/y/pull/12"},
diff --git a/tests/integrations/linear/test_source.py b/tests/integrations/linear/test_source.py
index 8e83676..cdd6b9c 100644
--- a/tests/integrations/linear/test_source.py
+++ b/tests/integrations/linear/test_source.py
@@ -768,7 +768,7 @@ def test_detail_maps_every_property_and_sub_list():
     assert detail.project == "Improve Redis Scalability"
     assert detail.milestone == "Reduce forever data"
     assert detail.due_date == "2026-09-30"
-    assert detail.estimate == "3"
+    assert detail.estimate == "M"
 
     assert (detail.parent.id, detail.parent.title) == ("ENG-0", "the parent epic")
     assert detail.parent.status_type == "started"
@@ -874,15 +874,6 @@ def test_an_unparseable_due_date_is_malformed():
         issue_detail_with(detail_handler({"issue": issue}))
 
 
-def test_a_fractional_estimate_is_kept_and_a_whole_float_reads_as_an_integer():
-    fractional = json.loads(json.dumps(DETAIL["issue"])) | {"estimate": 3.5}
-    detail = issue_detail_with(detail_handler({"issue": fractional}))
-    assert detail.estimate == "3.5"
-    whole = json.loads(json.dumps(DETAIL["issue"])) | {"estimate": 3.0}
-    detail = issue_detail_with(detail_handler({"issue": whole}))
-    assert detail.estimate == "3"
-
-
 def test_a_pull_request_tag_unwraps_like_an_issue_tag():
     issue = json.loads(json.dumps(DETAIL["issue"])) | {
         "description": 'closed as <pull-request id="p1" href="https://linear.app/x/review/abc">'