diff --git a/scripts/lib/wic/engine.py b/scripts/lib/wic/engine.py
index 674ccfc2..ce7e6c5d 100644
--- a/scripts/lib/wic/engine.py
+++ b/scripts/lib/wic/engine.py
@@ -359,7 +359,7 @@ class Disk:
         Remove files/dirs and their contents from the partition.
         This only applies to ext* partition.
         """
-        abs_path = re.sub('\/\/+', '/', path)
+        abs_path = re.sub(r'\/\/+', '/', path)
         cmd = "{} {} -wR 'rm \"{}\"'".format(self.debugfs,
                                             self._get_part_image(pnum),
                                             abs_path)
diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
index 13a9cddf..7cc51315 100644
--- a/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -428,10 +428,10 @@ class BootimgEFIPlugin(SourcePlugin):
             elif source_params['loader'] == 'uefi-kernel':
                 kernel = get_bitbake_var("KERNEL_IMAGETYPE")
                 if not kernel:
-                    raise WicError("Empty KERNEL_IMAGETYPE %s\n" % target)
+                    raise WicError("Empty KERNEL_IMAGETYPE")
                 target = get_bitbake_var("TARGET_SYS")
                 if not target:
-                    raise WicError("Unknown arch (TARGET_SYS) %s\n" % target)
+                    raise WicError("Empty TARGET_SYS")
 
                 if re.match("x86_64", target):
                     kernel_efi_image = "bootx64.efi"
diff --git a/scripts/lib/wic/plugins/source/bootimg-partition.py b/scripts/lib/wic/plugins/source/bootimg-partition.py
index 94183174..1071d1af 100644
--- a/scripts/lib/wic/plugins/source/bootimg-partition.py
+++ b/scripts/lib/wic/plugins/source/bootimg-partition.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/scripts/lib/wic/plugins/source/empty.py b/scripts/lib/wic/plugins/source/empty.py
index c1903ca5..41789123 100644
--- a/scripts/lib/wic/plugins/source/empty.py
+++ b/scripts/lib/wic/plugins/source/empty.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: MIT
 #
diff --git a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
index afc9ea0f..607356ad 100644
--- a/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
+++ b/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
@@ -1,4 +1,6 @@
 #
+# Copyright OpenEmbedded Contributors
+#
 # SPDX-License-Identifier: GPL-2.0-only
 #
 # DESCRIPTION
diff --git a/scripts/lib/wic/plugins/source/rawcopy.py b/scripts/lib/wic/plugins/source/rawcopy.py
index 73017e86..21903c2f 100644
--- a/scripts/lib/wic/plugins/source/rawcopy.py
+++ b/scripts/lib/wic/plugins/source/rawcopy.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/scripts/lib/wic/plugins/source/rootfs.py b/scripts/lib/wic/plugins/source/rootfs.py
index c990143c..e29f3a4c 100644
--- a/scripts/lib/wic/plugins/source/rootfs.py
+++ b/scripts/lib/wic/plugins/source/rootfs.py
@@ -43,7 +43,7 @@ class RootfsPlugin(SourcePlugin):
         # directory, or modify a directory outside OpenEmbedded).
         full_path = os.path.realpath(os.path.join(rootfs_dir, path))
         if not full_path.startswith(os.path.realpath(rootfs_dir)):
-            logger.error("%s: Must point inside the rootfs: %s" % (cmd, path))
+            logger.error("%s: Must point inside the rootfs:" % (cmd, path))
             sys.exit(1)
 
         return full_path