diff --git a/setup.sh b/setup.sh
index 5dc71d8..5a1ecb2 100644
--- a/setup.sh
+++ b/setup.sh
@@ -612,7 +612,7 @@ function get_disks_with_one_efipart () {
 }
 
 function add_zbm_to_efi () {
-    if ! efibootmgr | grep -Pi -- 'ZFSBootMenu'; then
+    if ! efibootmgr | grep -Piq -- 'ZFSBootMenu'; then
         local efi_disks_list
         efi_disks_list="$(get_disks_with_one_efipart)"
         if grep -Piq -- '^'"${efi_drive}"'$' <<<"${efi_disks_list}"; then