diff --git a/extension/src/json-viewer/extract-json.js b/extension/src/json-viewer/extract-json.js
index 58200399..082ce19b 100644
--- a/extension/src/json-viewer/extract-json.js
+++ b/extension/src/json-viewer/extract-json.js
@@ -3,7 +3,7 @@ function extractJSON(rawJson) {
     .replace(/\s*while\((1|true)\)\s*;?/, '')
     .replace(/\s*for\(;;\)\s*;?/, '')
     .replace(/^[^{\[].+\({/, '{')
-    .replace(/}\);?\s*$/, '}');
+    .replace(/}\s?\);?\s*$/, '}');
 }
 
 module.exports = extractJSON;