diff --git a/usr/libexec/security-misc/check-for-usb-controller#security-misc-shared b/usr/libexec/security-misc/check-for-usb-controller#security-misc-shared
index 7688ee2..a23031b 100755
--- a/usr/libexec/security-misc/check-for-usb-controller#security-misc-shared
+++ b/usr/libexec/security-misc/check-for-usb-controller#security-misc-shared
@@ -5,7 +5,7 @@
 
 export LC_ALL='C'
 
-if lspci | grep -q '^[^ ]* USB controller: '; then
+if lspci | grep --quiet '^[^ ]* USB controller: '; then
   exit 0
 fi
 exit 1