diff --git a/src/diagrams/flowchart/parser/flow.spec.js b/src/diagrams/flowchart/parser/flow.spec.js
index 778691e89..a1aec2949 100644
--- a/src/diagrams/flowchart/parser/flow.spec.js
+++ b/src/diagrams/flowchart/parser/flow.spec.js
@@ -1402,6 +1402,27 @@ describe('when parsing ', function() {
     expect(vert['a'].type).toBe('diamond');
     expect(vert['a'].text).toBe('A <br/> end');
   });
+  it('should handle a single hexagon node', function() {
+    // Silly but syntactically correct
+    const res = flow.parser.parse('graph TD;a{{A}};');
+
+    const vert = flow.parser.yy.getVertices();
+    const edges = flow.parser.yy.getEdges();
+
+    expect(edges.length).toBe(0);
+    expect(vert['a'].type).toBe('hexagon');
+  });
+  it('should handle a single hexagon node with html in it', function() {
+    // Silly but syntactically correct
+    const res = flow.parser.parse('graph TD;a{{A <br> end}};');
+
+    const vert = flow.parser.yy.getVertices();
+    const edges = flow.parser.yy.getEdges();
+
+    expect(edges.length).toBe(0);
+    expect(vert['a'].type).toBe('hexagon');
+    expect(vert['a'].text).toBe('A <br/> end');
+  });
   it('should handle a single round node with html in it', function() {
     // Silly but syntactically correct
     const res = flow.parser.parse('graph TD;a(A <br> end);');