diff --git a/codespell-problem-matcher/.github/workflows/test.yml b/codespell-problem-matcher/.github/workflows/test.yml
index 2a05433..5116018 100644
--- a/codespell-problem-matcher/.github/workflows/test.yml
+++ b/codespell-problem-matcher/.github/workflows/test.yml
@@ -6,7 +6,21 @@ on:
   pull_request:
 
 jobs:
-  test:
+  test-stable:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+    - uses: actions/setup-python@v1
+    - run: pip install codespell
+    - uses: ./
+    - name: Check codespell
+      run: codespell test/test.txt || true
+    - name: Check codespell on an unusually named file
+      run: codespell test/test:2.txt || true
+    - name: Check codespell on a binary file
+      run: codespell test/test.bin || true
+  test-master:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
diff --git a/codespell-problem-matcher/codespell-matcher.json b/codespell-problem-matcher/codespell-matcher.json
index 7e7abfc..cded56c 100644
--- a/codespell-problem-matcher/codespell-matcher.json
+++ b/codespell-problem-matcher/codespell-matcher.json
@@ -15,7 +15,7 @@
 			"owner": "codespell-matcher-specified",
 			"pattern": [
 				{
-					"regexp": "^(ERROR|WARNING):\\s+(.+):\\s+(.+)\\s*$",
+					"regexp": "^(ERROR|WARNING):\\s+(.+):\\s+(.+?)\\s*$",
 					"file": 3,
 					"severity": 1,
 					"message": 2