diff --git a/diskimage_builder/elements/iso/cleanup.d/100-build-iso b/diskimage_builder/elements/iso/cleanup.d/100-build-iso
index 9f9febf5..afc62802 100755
--- a/diskimage_builder/elements/iso/cleanup.d/100-build-iso
+++ b/diskimage_builder/elements/iso/cleanup.d/100-build-iso
@@ -32,6 +32,12 @@ function build_efiboot_img() {
     if [[ $DISTRO_NAME = "fedora" || $DISTRO_NAME = "rhel7" ]] ; then
         cp $TMP_BOOTLOADER_DIR/shim.efi $TMP_BUILD_DIR/bootx64.efi
         cp $TMP_BOOTLOADER_DIR/grubx64.efi $TMP_BUILD_DIR/grubx64.efi
+    elif [[ $DISTRO_NAME = "centos" ]] ; then
+        cp $TMP_BOOTLOADER_DIR/shimx64-centos.efi $TMP_BUILD_DIR/bootx64.efi
+        cp $TMP_BOOTLOADER_DIR/grubx64.efi $TMP_BUILD_DIR/grubx64.efi
+    elif [[ $DISTRO_NAME = "ubuntu" || $DISTRO_NAME = "debian" ]] ; then
+        cp $TMP_BOOTLOADER_DIR/shimx64.efi.signed $TMP_BUILD_DIR/bootx64.efi
+        cp $TMP_BOOTLOADER_DIR/grubx64.efi.signed $TMP_BUILD_DIR/grubx64.efi
     else
         cp $TMP_BOOTLOADER_DIR/shim.efi.signed $TMP_BUILD_DIR/bootx64.efi
         cp $TMP_BOOTLOADER_DIR/grubx64.efi.signed $TMP_BUILD_DIR/grubx64.efi
@@ -65,6 +71,10 @@ function build_iso() {
     if [ $DISTRO_NAME = "fedora" ]; then
         EFI_BOOT_DIR="EFI/fedora"
         EXTRA_KERNEL_PARAMS="usbcore.autosuspend=-1"
+    #centos
+    elif [ $DISTRO_NAME = "centos" ]; then
+        EFI_BOOT_DIR="EFI/centos"
+        EXTRA_KERNEL_PARAMS=""
     #debian
     elif [ $DISTRO_NAME = "debian" ]; then
         EFI_BOOT_DIR="EFI/debian"
@@ -178,4 +188,3 @@ build_iso "$EMITTED_KERNEL" "$EMITTED_RAMDISK" "$EMITTED_KERNEL_CMDLINE_ARGS" \
 
 # Clean-up the bootloaders directory
 sudo rm -fr $TMP_BOOTLOADER_DIR
-
diff --git a/diskimage_builder/elements/iso/pkg-map b/diskimage_builder/elements/iso/pkg-map
index a9d9d371..4226ac28 100644
--- a/diskimage_builder/elements/iso/pkg-map
+++ b/diskimage_builder/elements/iso/pkg-map
@@ -4,6 +4,11 @@
         "syslinux": "syslinux",
         "syslinux-common": "syslinux-common",
         "isolinux": "isolinux"
+    },
+    "ubuntu":{
+        "syslinux": "syslinux",
+        "syslinux-common": "syslinux-common",
+        "isolinux": "isolinux"
     }
   },
   "family":{
@@ -24,4 +29,3 @@
       "isolinux": ""
   }
 }
-
diff --git a/diskimage_builder/elements/iso/post-install.d/01-copy-bootloaders b/diskimage_builder/elements/iso/post-install.d/01-copy-bootloaders
index 63b96695..4d38d9fa 100755
--- a/diskimage_builder/elements/iso/post-install.d/01-copy-bootloaders
+++ b/diskimage_builder/elements/iso/post-install.d/01-copy-bootloaders
@@ -16,10 +16,16 @@ if [ $DISTRO_NAME = "fedora" ]; then
     SHIM_FILE="/boot/efi/EFI/fedora/shim.efi"
     SYSLINUX_FILE="/usr/share/syslinux/isolinux.bin"
     LDLINUX_FILE="/usr/share/syslinux/ldlinux.c32"
-#debian
-elif [ $DISTRO_NAME = "debian" ]; then
+#centos
+elif [ $DISTRO_NAME = "centos" ]; then
+    GRUB_FILE="/boot/efi/EFI/centos/grubx64.efi"
+    SHIM_FILE="/boot/efi/EFI/centos/shimx64-centos.efi"
+    SYSLINUX_FILE="/usr/share/syslinux/isolinux.bin"
+    LDLINUX_FILE="/usr/share/syslinux/ldlinux.c32"
+#debian/ubuntu
+elif [ $DISTRO_NAME = "ubuntu" || $DISTRO_NAME = "debian" ]; then
     GRUB_FILE="/usr/lib/grub/x86_64-efi-signed/grubx64.efi.signed"
-    SHIM_FILE="/usr/lib/shim/shim.efi.signed"
+    SHIM_FILE="/usr/lib/shim/shimx64.efi.signed"
     SYSLINUX_FILE="/usr/lib/ISOLINUX/isolinux.bin"
     LDLINUX_FILE="/usr/lib/syslinux/modules/bios/ldlinux.c32"
 #rhel7
@@ -28,18 +34,23 @@ elif [ $DISTRO_NAME = "rhel7" ]; then
     SHIM_FILE="/boot/efi/EFI/redhat/shim.efi"
     SYSLINUX_FILE="/usr/share/syslinux/isolinux.bin"
     LDLINUX_FILE="/usr/share/syslinux/ldlinux.c32"
-#ubuntu
+#other
 else
     GRUB_FILE="/usr/lib/grub/x86_64-efi-signed/grubx64.efi.signed"
-    SHIM_FILE="/usr/lib/shim/shim.efi.signed"
-    SYSLINUX_FILE="/usr/lib/syslinux/isolinux.bin"
-    LDLINUX_FILE="/usr/lib/syslinux/ldlinux.c32"
+    SHIM_FILE="/usr/lib/shim/shimx64.efi.signed"
+    SYSLINUX_FILE="/usr/lib/ISOLINUX/isolinux.bin"
+    LDLINUX_FILE="/usr/lib/syslinux/modules/bios/ldlinux.c32"
 fi
 
 cp $GRUB_FILE $TMP_BOOTLOADER_DIR
 cp $SHIM_FILE $TMP_BOOTLOADER_DIR
 cp $SYSLINUX_FILE $TMP_BOOTLOADER_DIR
 
+# On some operating systems signed bootloader packages install
+# files with read permissions for root only, whereas some for all
+# the users.
+chmod --recursive +r $TMP_BOOTLOADER_DIR
+
 # Starting from SYSLINUX 5.00, the isolinux.bin is dependent
 # on ldlinux.c32.
 # http://www.syslinux.org/wiki/index.php/Library_modules