diff --git a/iso_configs/calamares_settings/deb/scripts/bootloader-config b/iso_configs/calamares_settings/deb/scripts/bootloader-config
index 521dc5b9..d95b0017 100755
--- a/iso_configs/calamares_settings/deb/scripts/bootloader-config
+++ b/iso_configs/calamares_settings/deb/scripts/bootloader-config
@@ -29,9 +29,14 @@ case "$ARCH" in
             DEBIAN_FRONTEND=noninteractive chroot $CHROOT apt-get -y install grub-pc
         fi
         ;;
-    i686)
+i686)
+    if [ -d /sys/firmware/efi/efivars ]; then
         echo " * Installing grub-efi-ia32 (uefi 32-bit)..."
         DEBIAN_FRONTEND=noninteractive chroot $CHROOT apt-get -y install grub-efi-ia32
+    else
+        echo " * Installing grub-pc (bios 32-bit)..."
+        DEBIAN_FRONTEND=noninteractive chroot $CHROOT apt-get -y install grub-pc
+    fi
         ;;
     aarch64)
         echo " * Installing grub-efi-arm64 (uefi arm64)..."