One svg test is failling on IE

[clmath]

Warning: Test main - svg plugin - Loading an icon with an empty viewBox FAILED on internet explorer 10 on WINDOWS:
AssertionError: Icon with empty viewBox gets an empty viewBox attribute in the sprite: expected null to equal ''
  at assert  <__intern\node_modules\chai\chai.js:921:7>
  at assertEqual  <__intern\node_modules\chai\chai.js:1396:7>
  at Anonymous function  <__intern\node_modules\chai\chai.js:3627:5>
  at strictEqual  <__intern\node_modules\chai\chai.js:2487:5>
  at Anonymous function  <requirejs-dplugins\tests\unit\svg.js:151:5>
  at Anonymous function  <__intern\lib\Test.js:104:6>
  at Anonymous function  <__intern\lib\Test.js:116:7>
  at execCb  <requirejs\require.js:1658:17>
  at check  <requirejs\require.js:874:33>
  at Anonymous function  <requirejs\require.js:1121:29>