diff --git a/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp b/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
index 94f94c4c28..e3a0fa2bbd 100644
--- a/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
+++ b/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
@@ -96,9 +96,12 @@ void USBDeviceAddToWhitelistDialog::InitControls()
   main_layout->addWidget(m_whitelist_buttonbox);
 
   // i18n: VID means Vendor ID (in the context of a USB device)
-  device_vid_textbox->setPlaceholderText(tr("Device VID (e.g., 057e)"));
+  device_vid_textbox->setPlaceholderText(tr("Device VID"));
   // i18n: PID means Product ID (in the context of a USB device), not Process ID
-  device_pid_textbox->setPlaceholderText(tr("Device PID (e.g., 0305)"));
+  device_pid_textbox->setPlaceholderText(tr("Device PID"));
+
+  device_vid_textbox->setMaxLength(4);
+  device_pid_textbox->setMaxLength(4);
 }
 
 void USBDeviceAddToWhitelistDialog::RefreshDeviceList()