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-rw-r--r--ui/jquery.ui.accordion.js4
1 files changed, 3 insertions, 1 deletions
diff --git a/ui/jquery.ui.accordion.js b/ui/jquery.ui.accordion.js
index 24ef019e1..5fa4b1aee 100644
--- a/ui/jquery.ui.accordion.js
+++ b/ui/jquery.ui.accordion.js
@@ -488,7 +488,9 @@ $.widget( "ui.accordion", {
// other classes are removed before the animation; this one needs to stay until completed
this.toHide.removeClass( "ui-accordion-content-active" );
// Work around for rendering bug in IE (#5421)
- this.toHide.parent()[0].className = this.toHide.parent()[0].className;
+ if ( this.toHide.length ) {
+ this.toHide.parent()[0].className = this.toHide.parent()[0].className;
+ }
this._trigger( "change", null, this.data );
}