diff --git a/chrome/content/zotero/xpcom/connector/translator.js b/chrome/content/zotero/xpcom/connector/translator.js
index 609788fbc..603af97b6 100644
--- a/chrome/content/zotero/xpcom/connector/translator.js
+++ b/chrome/content/zotero/xpcom/connector/translator.js
@@ -203,7 +203,7 @@ Zotero.Translators = new function() {
 					} else {
 						// in Firefox, push the converterFunction
 						converterFunctions.push(new function() {
-							var re = new RegExp('^https?://(?:[^/]\\.)?'+Zotero.Utilities.quotemeta(properHosts[j-1])+'/', "gi");
+							var re = new RegExp('^https?://(?:[^/]\\.)?'+Zotero.Utilities.quotemeta(properHosts[j-1])+'(?=/)', "gi");
 							var proxyHost = proxyHosts[j-1].replace(/\$/g, "$$$$");
 							return function(uri) { return uri.replace(re, "$&."+proxyHost) };
 						});
diff --git a/chrome/content/zotero/xpcom/translation/translator.js b/chrome/content/zotero/xpcom/translation/translator.js
index c4277658f..e63334f1d 100644
--- a/chrome/content/zotero/xpcom/translation/translator.js
+++ b/chrome/content/zotero/xpcom/translation/translator.js
@@ -254,7 +254,7 @@ Zotero.Translators = new function() {
 						}
 					} else {
 						converterFunctions.push(new function() {
-							var re = new RegExp('^https?://(?:[^/]+\\.)?'+Zotero.Utilities.quotemeta(properHosts[j-1]+'/'), "gi");
+							var re = new RegExp('^https?://(?:[^/]+\\.)?'+Zotero.Utilities.quotemeta(properHosts[j-1])+'(?=/)', "gi");
 							var proxyHost = proxyHosts[j-1].replace(/\$/g, "$$$$");
 							return function(uri) { return uri.replace(re, "$&."+proxyHost) };
 						});