diff --git a/lua/frecency/picker.lua b/lua/frecency/picker.lua
index bc8ba6a..2c13b83 100644
--- a/lua/frecency/picker.lua
+++ b/lua/frecency/picker.lua
@@ -202,7 +202,8 @@ function Picker:fetch_results(workspace, datetime)
   end
   for _, file in ipairs(files) do
     local start_recency = os.clock()
-    file.score = self.recency:calculate(file.count, age_map[file.id])
+    local ages = age_map[file.id] --[[@as number[]?]]
+    file.score = ages and self.recency:calculate(file.count, ages) or 0
     elapsed_recency = elapsed_recency + (os.clock() - start_recency)
   end
   log.debug(("it takes %f seconds in calculating recency"):format(elapsed_recency))
diff --git a/lua/frecency/tests/frecency_spec.lua b/lua/frecency/tests/frecency_spec.lua
index de133a2..769e0a2 100644
--- a/lua/frecency/tests/frecency_spec.lua
+++ b/lua/frecency/tests/frecency_spec.lua
@@ -142,21 +142,25 @@ describe("frecency", function()
         local register = make_register(frecency, dir)
         register("hoge1.txt", "2023-07-29T00:00:00+09:00")
         register("hoge1.txt", "2023-07-29T00:01:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:02:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:03:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:04:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:05:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:06:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:07:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:08:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:09:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:10:00+09:00", true)
-        register("hoge1.txt", "2023-07-29T00:11:00+09:00", true)
+
+        register("hoge2.txt", "2023-07-29T00:00:00+09:00")
+        register("hoge2.txt", "2023-07-29T00:01:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:02:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:03:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:04:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:05:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:06:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:07:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:08:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:09:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:10:00+09:00", true)
+        register("hoge2.txt", "2023-07-29T00:11:00+09:00", true)
 
         it("calculates score from the recent 10 times", function()
           local results = frecency.picker:fetch_results(nil, "2023-07-29T00:12:00+09:00")
           assert.are.same({
-            { count = 12, id = 1, path = filepath(dir, "hoge1.txt"), score = 12 * (10 * 100) / 10 },
+            { count = 12, id = 2, path = filepath(dir, "hoge2.txt"), score = 12 * (10 * 100) / 10 },
+            { count = 2, id = 1, path = filepath(dir, "hoge1.txt"), score = 2 * (2 * 100) / 10 },
           }, results)
         end)
       end)