diff --git a/packages/redux-devtools-core/jest.config.js b/packages/redux-devtools-core/jest.config.js
index 753ed444..547c49dd 100644
--- a/packages/redux-devtools-core/jest.config.js
+++ b/packages/redux-devtools-core/jest.config.js
@@ -1,7 +1,4 @@
 module.exports = {
   preset: 'ts-jest',
   setupFilesAfterEnv: ['<rootDir>/test/setup.ts'],
-  moduleNameMapper: {
-    '\\.(css|scss)$': '<rootDir>/test/__mocks__/styleMock.ts',
-  },
 };
diff --git a/packages/redux-devtools-core/test/__mocks__/styleMock.ts b/packages/redux-devtools-core/test/__mocks__/styleMock.ts
deleted file mode 100644
index f053ebf7..00000000
--- a/packages/redux-devtools-core/test/__mocks__/styleMock.ts
+++ /dev/null
@@ -1 +0,0 @@
-module.exports = {};