diff --git a/src/testing/jest/jest-config.ts b/src/testing/jest/jest-config.ts
index a7af7128b71..97c7f4c6de1 100644
--- a/src/testing/jest/jest-config.ts
+++ b/src/testing/jest/jest-config.ts
@@ -58,7 +58,7 @@ export function buildJestConfig(config: d.Config) {
   if (isString(stencilConfigTesting.coverageDirectory)) {
     jestConfig.coverageDirectory = stencilConfigTesting.coverageDirectory;
   }
-  if (isString(stencilConfigTesting.coverageThreshold)) {
+  if (stencilConfigTesting.coverageThreshold) {
     jestConfig.coverageThreshold = stencilConfigTesting.coverageThreshold;
   }
   if (isString(stencilConfigTesting.globalSetup)) {