diff --git a/node-powershell/node-powershell-tests.ts b/node-powershell/node-powershell-tests.ts
index e1b28e4b92..a60f9db331 100644
--- a/node-powershell/node-powershell-tests.ts
+++ b/node-powershell/node-powershell-tests.ts
@@ -10,12 +10,11 @@ var ps = new nodePowershell(options);
 // Methods
 ps.addCommand('Write-Host node-powershell', [
     { name: 'foregroundcolor', value: 'red' },
-    { name: 'nonewline', value: null } //switch
+    { name: 'nonewline' } //switch
 ]).then((cmdsArr: string[]) => { }).catch((err: any) => { });
 
 ps.addCommand('Write-Host node-powershell', [
-    { foregroundcolor: 'red' },
-    { nonewline: null } //switch
+    { foregroundcolor: 'red' }
 ]);
 
 ps.invoke().then((output: string) => { }).catch((err: any) => { });
diff --git a/node-powershell/tsconfig.json b/node-powershell/tsconfig.json
index c8ca0fed82..6cd3607f4f 100644
--- a/node-powershell/tsconfig.json
+++ b/node-powershell/tsconfig.json
@@ -6,7 +6,7 @@
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"