diff --git a/assets/languages.yaml b/assets/languages.yaml
index 7ac1fd9..8099dce 100644
--- a/assets/languages.yaml
+++ b/assets/languages.yaml
@@ -2334,6 +2334,7 @@
   codemirror_mode: properties
   codemirror_mime_type: text/x-properties
   language_id: 163
+  comment_style_id: Semicolon
 IRC log:
   type: data
   aliases:
diff --git a/assets/styles.yaml b/assets/styles.yaml
index 216232f..a79eb6c 100644
--- a/assets/styles.yaml
+++ b/assets/styles.yaml
@@ -59,3 +59,8 @@
   start: '"'
   middle: '"'
   end: '"'
+
+- id: Semicolon
+  start: ';'
+  middle: ';'
+  end: ';'
diff --git a/pkg/license/norm.go b/pkg/license/norm.go
index 0bc056b..cc21552 100644
--- a/pkg/license/norm.go
+++ b/pkg/license/norm.go
@@ -45,6 +45,7 @@
 		regexp.MustCompile(`(?m)^\s*//+`),   // //
 		regexp.MustCompile(`(?m)^\s*"""+`),  // """
 		regexp.MustCompile(`(?m)^\s*\(\*+`), // (*
+		regexp.MustCompile(`(?m)^\s*;+`),    // ;
 
 		regexp.MustCompile(`(?m)^\s*/\*+`), // /*
 		regexp.MustCompile(`(?m)^\s*\*+/`), //  */
diff --git a/test/testdata/include_test/with_license/testcase.ini b/test/testdata/include_test/with_license/testcase.ini
new file mode 100644
index 0000000..f4101df
--- /dev/null
+++ b/test/testdata/include_test/with_license/testcase.ini
@@ -0,0 +1,17 @@
+; Licensed to the Apache Software Foundation (ASF) under one
+; or more contributor license agreements.  See the NOTICE file
+; distributed with this work for additional information
+; regarding copyright ownership.  The ASF licenses this file
+; to you under the Apache License, Version 2.0 (the
+; "License"); you may not use this file except in compliance
+; with the License.  You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+
+; program config file
diff --git a/test/testdata/include_test/without_license/testcase.ini b/test/testdata/include_test/without_license/testcase.ini
new file mode 100644
index 0000000..7e8513c
--- /dev/null
+++ b/test/testdata/include_test/without_license/testcase.ini
@@ -0,0 +1 @@
+; program config file