diff --git a/openslides/motions/static/js/motions/linenumbering.js b/openslides/motions/static/js/motions/linenumbering.js
index 5a4833d08..09e6dba5f 100644
--- a/openslides/motions/static/js/motions/linenumbering.js
+++ b/openslides/motions/static/js/motions/linenumbering.js
@@ -39,7 +39,8 @@ angular.module('OpenSlidesApp.motions.lineNumbering', [])
 
         this._isInlineElement = function (node) {
             var inlineElements = [
-                'SPAN', 'A', 'EM', 'S', 'B', 'I', 'STRONG', 'U', 'BIG', 'SMALL', 'SUB', 'SUP', 'TT', 'INS', 'DEL'
+                'SPAN', 'A', 'EM', 'S', 'B', 'I', 'STRONG', 'U', 'BIG', 'SMALL', 'SUB', 'SUP', 'TT', 'INS', 'DEL',
+                'STRIKE'
             ];
             return (inlineElements.indexOf(node.nodeName) > -1);
         };
diff --git a/tests/karma/motions/linenumbering.service.test.js b/tests/karma/motions/linenumbering.service.test.js
index 785354ca4..7b13ab966 100644
--- a/tests/karma/motions/linenumbering.service.test.js
+++ b/tests/karma/motions/linenumbering.service.test.js
@@ -133,6 +133,13 @@ describe('linenumbering', function () {
       expect(outHtml).toBe(noMarkup(1) + '1234 <del>1234</del> ' + brMarkup(2) + '1234 1234');
       expect(lineNumberingService.stripLineNumbers(outHtml)).toBe(inHtml);
     });
+
+    it('handles STRIKE-tags', function () {
+      var inHtml = '<p>et accusam et justo duo dolores et ea <span style="color: #ff0000;"><strike>rebum </strike></span><span style="color: #006400;">Inserted Text</span>. Stet clita kasd gubergren,</p>';
+      var outHtml = lineNumberingService.insertLineNumbers(inHtml, 80);
+      expect(outHtml).toBe('<p>' + noMarkup(1) + 'et accusam et justo duo dolores et ea <span style="color: #ff0000;"><strike>rebum </strike></span><span style="color: #006400;">Inserted Text</span>. Stet clita kasd ' + brMarkup(2) + 'gubergren,</p>');
+      expect(lineNumberingService.stripLineNumbers(outHtml)).toBe(inHtml);
+    });
   });