diff --git a/code/scripts/espurna_utils/release.py b/code/scripts/espurna_utils/release.py
index deee4ef0..4c21a038 100644
--- a/code/scripts/espurna_utils/release.py
+++ b/code/scripts/espurna_utils/release.py
@@ -40,6 +40,7 @@ def merge_cpp(sources, output):
         tmp.write(b'#include "espurna.h"\n')
         for source in sources:
             with open(source, "rb") as fobj:
+                tmp.write('# 1 "{}"\n'.format(source.replace("\\", "/")).encode('utf-8'));
                 shutil.copyfileobj(fobj, tmp)
 
         tmp.seek(0)