diff --git a/chrome/content/zotero/preferences/preferences_search.js b/chrome/content/zotero/preferences/preferences_search.js
index 6b3b56631..42bcc1831 100644
--- a/chrome/content/zotero/preferences/preferences_search.js
+++ b/chrome/content/zotero/preferences/preferences_search.js
@@ -392,13 +392,7 @@ Zotero_Preferences.Search = {
 		
 		wbp.progressListener = progressListener;
 		Zotero.debug("Saving " + uri.spec + " to " + fileURL.spec);
-		try {
-			wbp.saveURI(uri, null, null, null, null, fileURL);
-		} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-			// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-			// XXX Always use when we no longer support Firefox < 18
-			wbp.saveURI(uri, null, null, null, null, fileURL, null);
-		}
+		Zotero.Utilities.Internal.saveURI(wbp, nsIURL, file);
 	},
 	
 	
diff --git a/chrome/content/zotero/webpagedump/common.js b/chrome/content/zotero/webpagedump/common.js
index 2e290d06b..00dbfb43f 100644
--- a/chrome/content/zotero/webpagedump/common.js
+++ b/chrome/content/zotero/webpagedump/common.js
@@ -672,13 +672,7 @@ var wpdCommon = {
 
 			// has the url the same filetype like the file extension?
 			//save file to target
-			try {
-				obj_Persist.saveURI(obj_URI, null, null, null, null, obj_TargetFile);
-			} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-				// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-				// XXX Always use when we no longer support Firefox < 18
-				obj_Persist.saveURI(obj_URI, null, null, null, null, obj_TargetFile, null);
-			}
+			Zotero.Utilities.Internal.saveURI(wbp, nsIURL, file);
 
 			return true;
 
diff --git a/chrome/content/zotero/xpcom/attachments.js b/chrome/content/zotero/xpcom/attachments.js
index 89c2005f5..80c841fea 100644
--- a/chrome/content/zotero/xpcom/attachments.js
+++ b/chrome/content/zotero/xpcom/attachments.js
@@ -347,13 +347,8 @@ Zotero.Attachments = new function(){
 				var nsIURL = Components.classes["@mozilla.org/network/standard-url;1"]
 							.createInstance(Components.interfaces.nsIURL);
 				nsIURL.spec = url;
-				try {
-					wbp.saveURI(nsIURL, null, null, null, null, file);
-				} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-					// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-					// XXX Always use when we no longer support Firefox < 18
-					wbp.saveURI(nsIURL, null, null, null, null, file, null);
-				}
+				Zotero.Utilities.saveURI(wbp, nsIURL, file);
+
 				
 				return attachmentItem;
 			}
@@ -663,13 +658,7 @@ Zotero.Attachments = new function(){
 						throw (e);
 					}
 				});
-				try {
-					wbp.saveURI(nsIURL, null, null, null, null, file);
-				} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-					// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-					// XXX Always use when we no longer support Firefox < 18
-					wbp.saveURI(nsIURL, null, null, null, null, file, null);
-				}
+				Zotero.Utilities.Internal.saveURI(wbp, nsIURL, file);
 			}
 			
 			// Add to collections
diff --git a/chrome/content/zotero/xpcom/storage/webdav.js b/chrome/content/zotero/xpcom/storage/webdav.js
index 55f104bb0..e6cf71963 100644
--- a/chrome/content/zotero/xpcom/storage/webdav.js
+++ b/chrome/content/zotero/xpcom/storage/webdav.js
@@ -963,13 +963,7 @@ Zotero.Sync.Storage.WebDAV = (function () {
 					.createInstance(nsIWBP);
 				wbp.persistFlags = nsIWBP.PERSIST_FLAGS_BYPASS_CACHE;
 				wbp.progressListener = listener;
-				try {
-					wbp.saveURI(uri, null, null, null, null, destFile);
-				} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-					// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-					// XXX Always use when we no longer support Firefox < 18
-					wbp.saveURI(uri, null, null, null, null, destFile, null);
-				}
+				Zotero.Utilities.Internal.saveURI(wbp, nsIURL, file);
 				
 				return deferred.promise;
 			});
diff --git a/chrome/content/zotero/xpcom/storage/zfs.js b/chrome/content/zotero/xpcom/storage/zfs.js
index 21de3c52d..a4d1efbac 100644
--- a/chrome/content/zotero/xpcom/storage/zfs.js
+++ b/chrome/content/zotero/xpcom/storage/zfs.js
@@ -944,13 +944,7 @@ Zotero.Sync.Storage.ZFS = (function () {
 					.createInstance(nsIWBP);
 				wbp.persistFlags = nsIWBP.PERSIST_FLAGS_BYPASS_CACHE;
 				wbp.progressListener = listener;
-				try {
-					wbp.saveURI(uri, null, null, null, null, destFile);
-				} catch(e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
-					// https://bugzilla.mozilla.org/show_bug.cgi?id=794602
-					// XXX Always use when we no longer support Firefox < 18
-					wbp.saveURI(uri, null, null, null, null, destFile, null);
-				}
+				Zotero.Utilities.Internal.saveURI(wbp, nsIURL, file);
 				
 				return deferred.promise;
 			});
diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index d7d2e5f83..5edbf728a 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -469,5 +469,21 @@ Zotero.Utilities.Internal.Base64 = {
 		 }
 		 
 		 return string;
-	 }
+	 },
+	/**
+	 * saveURI wrapper function
+	 * @param {nsIWebBrowserPersist} nsIWebBrowserPersist
+	 * @param {nsIURI} source URL
+	 * @param {nsISupports} target file
+	 */
+	saveURI: function (wbp, source, target) {
+		// Firefox 35 and below
+		try {
+			wbp.saveURI(source, null, null, null, null, target, null);
+		}
+		// Firefox 36+ needs one more parameter
+		catch (e if e.name === "NS_ERROR_XPC_NOT_ENOUGH_ARGS") {
+			wbp.saveURI(source, null, null, null, null, null, target, null);
+		}
+	}
  }
\ No newline at end of file