diff --git a/components/zotero-protocol-handler.js b/components/zotero-protocol-handler.js
index 1a2ac6a671..bd2af05dc7 100644
--- a/components/zotero-protocol-handler.js
+++ b/components/zotero-protocol-handler.js
@@ -462,7 +462,7 @@ function ZoteroProtocolHandler() {
 								return '<span style="color: red; font-weight: bold">Error generating report</span>';
 							}
 						);
-						var str = NetUtil.readInputStreamToString(is, is.available(), {});
+						var str = NetUtil.readInputStreamToString(is, is.available(), { charset: "UTF-8" });
 						return Zotero.Promise.resolve(str);
 				}
 			});