diff --git a/_infrastructure/tests/runner.js b/_infrastructure/tests/runner.js
index 855cffa698..fd926bcb1c 100644
--- a/_infrastructure/tests/runner.js
+++ b/_infrastructure/tests/runner.js
@@ -586,6 +586,8 @@ var DefinitelyTyped;
                 var command = 'node ./_infrastructure/tests/typescript/tsc.js --module commonjs ';
                 if (IO.fileExists(tsfile + '.tscparams')) {
                     command += '@' + tsfile + '.tscparams';
+                } else {
+                    command += '--noImplicitAny';
                 }
                 Exec.exec(command, [tsfile], function (ExecResult) {
                     callback(ExecResult);
diff --git a/_infrastructure/tests/runner.ts b/_infrastructure/tests/runner.ts
index bd60ebe7ab..68e5f36bad 100644
--- a/_infrastructure/tests/runner.ts
+++ b/_infrastructure/tests/runner.ts
@@ -31,6 +31,8 @@ module DefinitelyTyped {
 				var command = 'node ./_infrastructure/tests/typescript/tsc.js --module commonjs ';
 				if (IO.fileExists(tsfile + '.tscparams')) {
 					command += '@' + tsfile + '.tscparams';
+				} else {
+					command += '--noImplicitAny';
 				}
 				Exec.exec(command, [tsfile], (ExecResult) => {
 				    callback(ExecResult);