diff --git a/src/main/capabilities/cv-vision.ts b/src/main/capabilities/cv-vision.ts
index d3935ee..c80dfed 100644
--- a/src/main/capabilities/cv-vision.ts
+++ b/src/main/capabilities/cv-vision.ts
@@ -27,6 +27,7 @@ async function grabScreen(imagePath: string): Promise<void> {
   fs.mkdirSync(path.dirname(imagePath), { recursive: true });
   const psScript = [
     "Add-Type -AssemblyName System.Drawing | Out-Null;",
+    "Add-Type -AssemblyName System.Windows.Forms | Out-Null;",
     "$b = [System.Windows.Forms.Screen]::PrimaryScreen.Bounds;",
     "$bmp = New-Object System.Drawing.Bitmap($b.Width, $b.Height);",
     "$g = [System.Drawing.Graphics]::FromImage($bmp);",