diff --git a/src/gui/DatabaseOpenWidget.cpp b/src/gui/DatabaseOpenWidget.cpp
index 1c013ea084..0ba100803f 100644
--- a/src/gui/DatabaseOpenWidget.cpp
+++ b/src/gui/DatabaseOpenWidget.cpp
@@ -171,8 +171,7 @@ bool DatabaseOpenWidget::event(QEvent* event)
     bool ret = DialogyWidget::event(event);
 
     switch (event->type()) {
-    case QEvent::Show:
-    case QEvent::WindowActivate: {
+    case QEvent::Show: {
         if (isOnQuickUnlockScreen() && (m_db.isNull() || !canPerformQuickUnlock())) {
             resetQuickUnlock();
         }
@@ -512,7 +511,10 @@ void DatabaseOpenWidget::pollHardwareKey(bool manualTrigger)
     m_pollingHardwareKey = true;
     m_manualHardwareKeyRefresh = manualTrigger;
 
-    YubiKey::instance()->findValidKeysAsync();
+    // Add a delay, if this is an automatic trigger, to allow the USB device to settle as
+    // the device may not report a valid serial number immediately after plugging in
+    int delay = manualTrigger ? 0 : 1000;
+    QTimer::singleShot(delay, this, [this] { YubiKey::instance()->findValidKeysAsync(); });
 }
 
 void DatabaseOpenWidget::hardwareKeyResponse(bool found)
diff --git a/src/gui/osutils/macutils/DeviceListenerMac.cpp b/src/gui/osutils/macutils/DeviceListenerMac.cpp
index 41d0ddb422..e3785a04a1 100644
--- a/src/gui/osutils/macutils/DeviceListenerMac.cpp
+++ b/src/gui/osutils/macutils/DeviceListenerMac.cpp
@@ -54,7 +54,7 @@ void DeviceListenerMac::registerHotplugCallback(bool arrived, bool left, int ven
             CFRelease(vid);
         }
         if (productId > 0) {
-            auto pid = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vendorId);
+            auto pid = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &productId);
             CFDictionaryAddValue(matchingDict, CFSTR(kIOHIDProductIDKey), pid);
             CFRelease(pid);
         }
diff --git a/src/keys/drivers/YubiKeyInterfaceUSB.cpp b/src/keys/drivers/YubiKeyInterfaceUSB.cpp
index 80d200f919..fde232d6f4 100644
--- a/src/keys/drivers/YubiKeyInterfaceUSB.cpp
+++ b/src/keys/drivers/YubiKeyInterfaceUSB.cpp
@@ -50,10 +50,22 @@ namespace
         yk_close_key(key);
     }
 
+    void printError()
+    {
+        if (yk_errno == YK_EUSBERR) {
+            qWarning("Hardware key USB error: %s", yk_usb_strerror());
+        } else {
+            qWarning("Hardware key error: %s", yk_strerror(yk_errno));
+        }
+    }
+
     unsigned int getSerial(YK_KEY* key)
     {
         unsigned int serial;
-        yk_get_serial(key, 1, 0, &serial);
+        if (!yk_get_serial(key, 1, 0, &serial)) {
+            printError();
+            return 0;
+        }
         return serial;
     }
 
@@ -70,11 +82,8 @@ namespace
             } else if (yk_errno == YK_ENOKEY) {
                 // No more connected keys
                 break;
-            } else if (yk_errno == YK_EUSBERR) {
-                qWarning("Hardware key USB error: %s", yk_usb_strerror());
-            } else {
-                qWarning("Hardware key error: %s", yk_strerror(yk_errno));
             }
+            printError();
         }
         return nullptr;
     }