diff --git a/src/diagrams/sequence/sequenceDiagram.spec.js b/src/diagrams/sequence/sequenceDiagram.spec.js
index 2ed1c411c..398db8e6e 100644
--- a/src/diagrams/sequence/sequenceDiagram.spec.js
+++ b/src/diagrams/sequence/sequenceDiagram.spec.js
@@ -15,7 +15,7 @@ describe('when parsing a sequenceDiagram', function() {
     parser.yy = sequenceDb;
     parser.yy.clear();
   });
-  it('it should handle a sequenceDiagram defintion', function() {
+  it('it should handle a sequenceDiagram definition', function() {
     const str =
       'sequenceDiagram\n' +
       'Alice->Bob:Hello Bob, how are you?\n' +