diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
index 7cc5131541..37d07093f5 100644
--- a/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -245,7 +245,7 @@ class BootimgEFIPlugin(SourcePlugin):
 
             # list of tuples (src_name, dst_name)
             deploy_files = []
-            for src_entry in re.findall(r'[\w;\-\./\*]+', boot_files):
+            for src_entry in re.findall(r'[\w;\-\.\+/\*]+', boot_files):
                 if ';' in src_entry:
                     dst_entry = tuple(src_entry.split(';'))
                     if not dst_entry[0] or not dst_entry[1]: