diff --git a/README.md b/README.md
index e6e2728..419df10 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,8 @@ The `your-sourcefile-map.json` structure is:
 
 There can be one or more mapping rules. For each *Defined in* only the first rule that matches is applied. In the above example the last rule would match all source files that did not start with `modules/module-one`. This compares to the *Simple Prefix* option.
 
+If you need to pass a custom string to indicate the line numeber in the url (defaults to `#L`), you can pass the `--sourcefile-url-lines-str` option.
+
 ---
 
 The options are mutually exclusive. It is not possible to use `--sourcefile-url-prefix` and `--sourcefile-url-map` at the same time.
diff --git a/src/SourcefileUrlMapPlugin.ts b/src/SourcefileUrlMapPlugin.ts
index f890989..7998fd1 100644
--- a/src/SourcefileUrlMapPlugin.ts
+++ b/src/SourcefileUrlMapPlugin.ts
@@ -1,8 +1,7 @@
 import * as Path from 'path'
 import * as FS from 'fs-extra'
-import {Component} from 'typedoc/dist/lib/utils/component'
-import {ConverterComponent} from 'typedoc/dist/lib/converter/components'
-import {Converter} from 'typedoc/dist/lib/converter/converter'
+import {Component, ConverterComponent} from 'typedoc/dist/lib/converter/components';
+import {Converter} from 'typedoc/dist/lib/converter/converter';
 import {Context} from 'typedoc/dist/lib/converter/context'
 import {SourceReference} from 'typedoc/dist/lib/models/sources/file'
 import {Options} from 'typedoc/dist/lib/utils/options/options'
@@ -16,10 +15,13 @@ interface Mapping {
 export class SourcefileUrlMapPlugin extends ConverterComponent {
 
     private mappings: Mapping[] | undefined
+    private linesStr: string | undefined
 
     public initialize(): void
     {
-        this.listenTo(this.owner, Converter.EVENT_BEGIN, this.onBegin)
+      this.listenTo(this.owner, {
+          [Converter.EVENT_BEGIN]: this.onBegin
+      })
     }
 
     private onBegin(): void
@@ -29,6 +31,8 @@ export class SourcefileUrlMapPlugin extends ConverterComponent {
         const mapRelativePath = options.getValue('sourcefile-url-map')
         const urlPrefix = options.getValue('sourcefile-url-prefix')
 
+        this.linesStr = options.getValue('sourcefile-url-lines-str') || '#L'
+
         if ( (typeof mapRelativePath !== 'string') && (typeof urlPrefix !== 'string') ) {
             return
         }
@@ -49,7 +53,9 @@ export class SourcefileUrlMapPlugin extends ConverterComponent {
             }
 
             // register handler
-            this.listenTo(this.owner, Converter.EVENT_RESOLVE_END, this.onEndResolve)
+            this.listenTo(this.owner, {
+              [Converter.EVENT_RESOLVE_END]: this.onEndResolve,
+            })
         }
         catch ( e ) {
             console.error('typedoc-plugin-sourcefile-url: ' + e.message)
@@ -124,7 +130,7 @@ export class SourcefileUrlMapPlugin extends ConverterComponent {
             if ( reflection.sources ) {
                 reflection.sources.forEach((source: SourceReference) => {
                     if (source.file && source.file.url) {
-                        source.url = source.file.url + '#L' + source.line
+                        source.url = source.file.url + this.linesStr + source.line
                     }
                 })
             }
diff --git a/src/main.js b/src/main.js
index d18128f..37b79f4 100644
--- a/src/main.js
+++ b/src/main.js
@@ -5,6 +5,7 @@ module.exports = function(PluginHost) {
 
     app.options.addDeclaration({name: 'sourcefile-url-map'});
     app.options.addDeclaration({name: 'sourcefile-url-prefix'});
+    app.options.addDeclaration({name: 'sourcefile-url-lines-str'});
 
     app.converter.addComponent('sourcefile-url', plugin.SourcefileUrlMapPlugin);
 };
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