diff --git a/utils/ipc/extract-docs.py b/utils/ipc/extract-docs.py
index 8f7fff9ff..c2050c998 100755
--- a/utils/ipc/extract-docs.py
+++ b/utils/ipc/extract-docs.py
@@ -10,9 +10,9 @@ import argparse
 import re
 import sys
 
-regex_block_start = re.compile('^\/\*\*$')
-regex_block_end = re.compile('^ \*\/$')
-regex_spdx = re.compile('^\/\* SPDX-License-Identifier: .* \*\/$')
+regex_block_start = re.compile(r'^/\*\*$')
+regex_block_end = re.compile(r'^ \*/$')
+regex_spdx = re.compile(r'^/\* SPDX-License-Identifier: .* \*/$')
 
 
 def main(argv):