diff --git a/import-layers/yocto-poky/scripts/lib/wic/plugins/source/bootimg-efi.py b/import-layers/yocto-poky/scripts/lib/wic/plugins/source/bootimg-efi.py
index 8bc3622..4adb80b 100644
--- a/import-layers/yocto-poky/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/import-layers/yocto-poky/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -234,5 +234,5 @@
         out = exec_cmd(du_cmd)
         bootimg_size = out.split()[0]
 
-        part.size = bootimg_size
+        part.size = int(bootimg_size)
         part.source_file = bootimg
diff --git a/import-layers/yocto-poky/scripts/lib/wic/plugins/source/rawcopy.py b/import-layers/yocto-poky/scripts/lib/wic/plugins/source/rawcopy.py
index e0b11f9..618dd44 100644
--- a/import-layers/yocto-poky/scripts/lib/wic/plugins/source/rawcopy.py
+++ b/import-layers/yocto-poky/scripts/lib/wic/plugins/source/rawcopy.py
@@ -71,16 +71,16 @@
         dst = os.path.join(cr_workdir, "%s.%s" % (source_params['file'], part.lineno))
 
         if 'skip' in source_params:
-            sparse_copy(src, dst, skip=source_params['skip'])
+            sparse_copy(src, dst, skip=int(source_params['skip']))
         else:
             sparse_copy(src, dst)
 
         # get the size in the right units for kickstart (kB)
         du_cmd = "du -Lbks %s" % dst
         out = exec_cmd(du_cmd)
-        filesize = out.split()[0]
+        filesize = int(out.split()[0])
 
-        if int(filesize) > int(part.size):
+        if filesize > part.size:
             part.size = filesize
 
         part.source_file = dst