diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9302716..62878d2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,10 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@master
+    - uses: actions/setup-python@v1
+    - run: pip install codespell
     - uses: ./
-    - name: Check sort with disorder
-      run: sort -c test/test.txt || true
-
+    - name: Check codespell
+      run: codespell test/test.txt || true
+    - name: Check codespell on an unusually named file
+      run: codespell test/test:2.txt || true
diff --git a/README.md b/README.md
index 98e1572..5b399b0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# sort-problem-matcher
+# codespell-problem-matcher
 
-This problem matcher lets you show errors from GNU `sort` as annotation in
+This problem matcher lets you show errors from `codespell` as annotation in
 GitHub Actions.
 
 Based on [korelstar](https://github.com/korelstar)'s [xmllint-problem-matcher](https://github.com/korelstar/xmllint-problem-matcher).
@@ -15,8 +15,8 @@ No outputs are generated apart from a configured problem matcher.
 
 ## Usage
 
-Add the step to your workflow, before `sort -c` is called.
+Add the step to your workflow, before `codespell` is called.
 
 ```yaml
-    - uses: codespell-project/sort-problem-matcher@v1
+    - uses: codespell-project/codespell-problem-matcher@v1
 ```
diff --git a/action.yml b/action.yml
index a2d771f..6d34e83 100644
--- a/action.yml
+++ b/action.yml
@@ -1,6 +1,6 @@
-name: 'sort problem matcher'
+name: 'codespell problem matcher'
 author: 'Peter Newman'
-description: 'Shows GNU sort errors as annotation (with file and code line) in GitHub Actions'
+description: 'Shows codespell errors as annotation (with file and code line) in GitHub Actions'
 runs:
   using: 'node12'
   main: 'index.js'
diff --git a/sort-matcher.json b/codespell-matcher.json
similarity index 61%
rename from sort-matcher.json
rename to codespell-matcher.json
index 8b00a6c..4ea7d93 100644
--- a/sort-matcher.json
+++ b/codespell-matcher.json
@@ -1,10 +1,10 @@
 {
 	"problemMatcher": [
 		{
-			"owner": "sort-matcher",
+			"owner": "codespell-matcher",
 			"pattern": [
 				{
-					"regexp": "^sort: (.+):(\\d+):\\s+(.+)$",
+					"regexp": "^(.+):(\\d+):\\s+(.+)$",
 					"file": 1,
 					"line": 2,
 					"message": 3
diff --git a/index.js b/index.js
index bfc9fb3..b3552d0 100755
--- a/index.js
+++ b/index.js
@@ -1,2 +1,2 @@
 #!/usr/bin/env node
-console.log(`::add-matcher::${__dirname}/sort-matcher.json`);
+console.log(`::add-matcher::${__dirname}/codespell-matcher.json`);
diff --git a/test/test.txt b/test/test.txt
index 95f3767..024f418 100644
--- a/test/test.txt
+++ b/test/test.txt
@@ -1,3 +1,4 @@
-a
-c
-b
+abandonned
+Abandonned
+ABANDONNED
+AbAnDoNnEd
diff --git a/test/test:2.txt b/test/test:2.txt
new file mode 100644
index 0000000..50a0985
--- /dev/null
+++ b/test/test:2.txt
@@ -0,0 +1 @@
+It's ackward when you make a spelling mistake.