diff --git a/deno.lock b/deno.lock
index 378717b..e05ba38 100644
--- a/deno.lock
+++ b/deno.lock
@@ -46,6 +46,8 @@
     "https://deno.land/x/http_utils@1.0.0/method.ts": "fa30381e4b34e8a10bd12c6582d37d550e898998a00cd3888e42a6c45f5ab0f3",
     "https://deno.land/x/http_utils@1.0.0/request.ts": "ce23c980198b01e24142a4ae5f3a9c25a7c55256e0e4600cf72d3a5139405b63",
     "https://deno.land/x/http_utils@1.0.0/response.ts": "2c1d1492170ba8ad165149c53127ea5b907b68d3ab2ee1358bf21c1dccff5d06",
+    "https://deno.land/x/http_utils@1.2.0/deps.ts": "ea68a335c0f6c1bf9fb9db271c453e78fd51d6902614db438b2bae3ab6114552",
+    "https://deno.land/x/http_utils@1.2.0/list.ts": "eb0820f10b828de9964626546fef15ca82008323633df24e9e362e0bf76ef4f5",
     "https://deno.land/x/isx@1.0.0/is_string.ts": "268254eab5f8dbc09ee879eb53675813cdc5350207dde436d457cb34462cc857",
     "https://deno.land/x/isx@1.1.0/is_string.ts": "268254eab5f8dbc09ee879eb53675813cdc5350207dde436d457cb34462cc857",
     "https://deno.land/x/isx@1.1.1/is_boolean.ts": "711a4baeb0eb146c9013101d6d8bd90297739a787a6f09c5dd834654fa6d3f52",
@@ -56,8 +58,10 @@
     "https://deno.land/x/isx@1.1.1/iterable/is_not_empty.ts": "7e0417b5d6a2d58cc5a446e0f55b8188504873ede0dbea19c5316ed9e21dad08",
     "https://deno.land/x/isx@1.1.1/number/is_negative_number.ts": "0f58460eeccc5cd56c4c246322f788a93348506462e411303a1470edeb0813a8",
     "https://deno.land/x/isx@1.1.1/number/is_non_negative_integer.ts": "ce7b63f40d22bd5575f008f370493e1ce4e5305f59144fb6362a459a2b13ccf1",
+    "https://deno.land/x/isx@1.3.1/is_null.ts": "02b30255073843d001e715a04382f1d6aebd77ed5506ffbb44bf77b9e20ebf7d",
     "https://deno.land/x/prelude_js@1.0.0/to_lower_case.ts": "690b71187878b2db46b02e462b89b5acc9cda0fa2a650b296ef9292f061c1f0f",
     "https://deno.land/x/prelude_js@1.0.0/trim.ts": "9e839053220bee1c5673026ccf4ddba475c3b982b3284b1d6b86e5440821de61",
+    "https://deno.land/x/prelude_js@1.2.0/trim.ts": "9e839053220bee1c5673026ccf4ddba475c3b982b3284b1d6b86e5440821de61",
     "https://deno.land/x/range_parser@1.2.0/deps.ts": "b250c816b454f719e84b80d5a64fcc103077d2539aa4c5049777cc0e26ab31e1",
     "https://deno.land/x/range_parser@1.2.0/mod.ts": "4406fe10eef8b97499b2cfdc71267cd1bf854d1c25be5df7cfefd6e065e4e55f",
     "https://deno.land/x/range_parser@1.2.0/parse.ts": "bff5f5a5283ad64f8c7635c9a5c02e1a6b316dad7c4d6a73b92415ca7386e8f5",
diff --git a/if_match_test.ts b/if_match_test.ts
index b2e1b63..6a28bef 100644
--- a/if_match_test.ts
+++ b/if_match_test.ts
@@ -44,6 +44,8 @@ describe("parse", () => {
         tag: "*",
         weak: false,
       }]],
+
+      [`","`, [{ tag: ",", weak: false }]],
     ];
 
     table.forEach(([input, expected]) => {
@@ -57,7 +59,6 @@ describe("parse", () => {
       "* a",
       "*,",
       `*, ""`,
-      `","`,
       `* *`,
       `**`,
       `"", *`,
diff --git a/preconditions/utils_test.ts b/preconditions/utils_test.ts
index 0b78d52..b3021ec 100644
--- a/preconditions/utils_test.ts
+++ b/preconditions/utils_test.ts
@@ -71,6 +71,7 @@ describe("ifNoneMatch", () => {
       [`"a", "b", "c"`, `"d"`],
       [`W/"a", "b", "c"`, `"d"`],
       [`W/"a", "b", "c"`, `W/"d"`],
+      [`"abc,def"`, `""`],
     ];
 
     table.forEach(([filedValue, etag]) => {
@@ -83,7 +84,6 @@ describe("ifNoneMatch", () => {
       ["", ""],
       [`""`, `"`],
       [`"`, `""`],
-      [`"abc,def"`, `""`],
     ];
 
     table.forEach(([filedValue, etag]) => {