diff --git a/IPython/html/tests/casperjs/test_cases/isolated_svg.js b/IPython/html/tests/casperjs/test_cases/isolated_svg.js
index 8ee7a1a..eb0156c 100644
--- a/IPython/html/tests/casperjs/test_cases/isolated_svg.js
+++ b/IPython/html/tests/casperjs/test_cases/isolated_svg.js
@@ -1,6 +1,6 @@
 //
 // Test svg isolation
-// An object whoose metadata contains an "isolated" tag must be isolated
+// An object whose metadata contains an "isolated" tag must be isolated
 // from the rest of the document. In the case of inline SVGs, this means
 // that multiple SVGs have different scopes. This test checks that there
 // are no CSS leaks between two isolated SVGs.