diff --git a/kiwi/bootloader/config/grub2.py b/kiwi/bootloader/config/grub2.py
index e3fada4dd00..d25c3c2f282 100644
--- a/kiwi/bootloader/config/grub2.py
+++ b/kiwi/bootloader/config/grub2.py
@@ -824,7 +824,7 @@ def _create_embedded_fat_efi_image(self):
             [self.boot_dir + '/boot/', self.arch, '/efi']
         )
         Command.run(
-            ['qemu-img', 'create', efi_fat_image, '15M']
+            ['qemu-img', 'create', efi_fat_image, '20M']
         )
         Command.run(
             ['mkdosfs', '-n', 'BOOT', efi_fat_image]
diff --git a/test/unit/bootloader/config/grub2_test.py b/test/unit/bootloader/config/grub2_test.py
index 10e7efa6a79..b110b95cd66 100644
--- a/test/unit/bootloader/config/grub2_test.py
+++ b/test/unit/bootloader/config/grub2_test.py
@@ -300,7 +300,7 @@ def test_write(
         assert mock_command.call_args_list == [
             call(
                 [
-                    'qemu-img', 'create', 'root_dir/boot/x86_64/efi', '15M'
+                    'qemu-img', 'create', 'root_dir/boot/x86_64/efi', '20M'
                 ]
             ),
             call(