diff --git a/chrome/content/zotero/xpcom/debug.js b/chrome/content/zotero/xpcom/debug.js
index adcd08c1e3..05ba3e6e55 100644
--- a/chrome/content/zotero/xpcom/debug.js
+++ b/chrome/content/zotero/xpcom/debug.js
@@ -82,13 +82,13 @@ Zotero.Debug = new function () {
 		}
 	}
 	
-	this.log = function (message, level, stack) {
+	this.log = function (message, level, maxDepth, stack) {
 		if (!this.enabled) {
 			return;
 		}
 		
 		if (typeof message != 'string') {
-			message = Zotero.Utilities.varDump(message);
+			message = Zotero.Utilities.varDump(message, 0, maxDepth);
 		}
 		
 		if (!level) {
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index dea8b33a32..f22f5d760b 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1031,11 +1031,12 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 	 *
 	 * @param {} message
 	 * @param {Integer} [level=3]
+	 * @param {Integer} [maxDepth]
 	 * @param {Boolean|Integer} [stack] Whether to display the calling stack.
 	 *   If true, stack is displayed starting from the caller. If an integer,
 	 *   that many stack levels will be omitted starting from the caller.
 	 */
-	function debug(message, level, stack) {
+	function debug(message, level, maxDepth, stack) {
 		// Account for this alias
 		if (stack === true) {
 			stack = 1;
@@ -1043,7 +1044,7 @@ Services.scriptloader.loadSubScript("resource://zotero/polyfill.js");
 			stack++;
 		}
 		
-		Zotero.Debug.log(message, level, stack);
+		Zotero.Debug.log(message, level, maxDepth, stack);
 	}