diff --git a/chrome/content/zotero/bindings/styled-textbox.xml b/chrome/content/zotero/bindings/styled-textbox.xml
index 45083b1d1..31ca1763d 100644
--- a/chrome/content/zotero/bindings/styled-textbox.xml
+++ b/chrome/content/zotero/bindings/styled-textbox.xml
@@ -181,7 +181,10 @@
 							this._styleWithCSS = true;
 						}
 						
-						this._browser.contentDocument.execCommand("styleWithCSS", false, this._styleWithCSS);
+						try {
+							this._browser.contentDocument.execCommand("styleWithCSS", false, this._styleWithCSS);
+						}
+						catch (e) {}
 					}
 					return val;
 				]]></setter>