diff --git a/packages/fetch-http-handler/karma.conf.js b/packages/fetch-http-handler/karma.conf.js
index bc32a3e1df65..cc44aa1034db 100644
--- a/packages/fetch-http-handler/karma.conf.js
+++ b/packages/fetch-http-handler/karma.conf.js
@@ -22,7 +22,6 @@ module.exports = function (config) {
       },
     },
     karmaTypescriptConfig: {
-      tsconfig: "./tsconfig.json",
       bundlerOptions: {
         addNodeGlobals: false,
       },
diff --git a/packages/hash-blob-browser/karma.conf.js b/packages/hash-blob-browser/karma.conf.js
index 0a11a610cacd..bf328640a04c 100644
--- a/packages/hash-blob-browser/karma.conf.js
+++ b/packages/hash-blob-browser/karma.conf.js
@@ -16,7 +16,6 @@ module.exports = function (config) {
       },
     },
     karmaTypescriptConfig: {
-      tsconfig: "./tsconfig.json",
       bundlerOptions: {
         addNodeGlobals: false,
       },