diff --git a/chrome/content/zotero/xpcom/debug.js b/chrome/content/zotero/xpcom/debug.js
index 0e5468f59..ea9caf6f7 100644
--- a/chrome/content/zotero/xpcom/debug.js
+++ b/chrome/content/zotero/xpcom/debug.js
@@ -139,7 +139,7 @@ Zotero.Debug = new function () {
 		}
 		
 		if (stack) {
-			message += '\n' + Zotero.Debug.stackToString(stack);
+			message += '\n' + this.stackToString(stack);
 		}
 		
 		if (_console || _consoleViewer) {
@@ -288,7 +288,7 @@ Zotero.Debug = new function () {
 				+ ':' + stack.lineNumber;
 			stack = stack.caller;
 		}
-		return str.substr(1);
+		return this.filterStack(str).substr(1);
 	};