diff --git a/browser.js b/browser.js
index 55f4cf92..ab495871 100644
--- a/browser.js
+++ b/browser.js
@@ -59,7 +59,11 @@ function useColors() {
  */
 
 exports.formatters.j = function(v) {
-  return JSON.stringify(v);
+  try {
+    return JSON.stringify(v);
+  }catch( err){
+    return '[UnexpectedJSONParseError]: ' + err.message;
+  }
 };
 
 
diff --git a/dist/debug.js b/dist/debug.js
index 97d6f787..e6732b86 100644
--- a/dist/debug.js
+++ b/dist/debug.js
@@ -384,7 +384,11 @@ function useColors() {
  */
 
 exports.formatters.j = function(v) {
-  return JSON.stringify(v);
+  try {
+    return JSON.stringify(v);
+  }catch( err){
+    return '[UnexpectedJSONParseError]: ' + err.message;
+  }
 };