diff --git a/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py b/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py
--- a/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py
+++ b/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py
@@ -87,7 +87,7 @@
 
   # Load the database and extract all files.
   database = json.load(open(os.path.join(build_path, db_path)))
-  files = [entry['file'] for entry in database]
+  files = [os.path.join(entry['directory'], entry['file']) for entry in database]
 
   # Filter out .rc files on Windows. CMake includes them for some reason.
   files = [f for f in files if not f.endswith('.rc')]