diff --git a/ament_clang_tidy/ament_clang_tidy/main.py b/ament_clang_tidy/ament_clang_tidy/main.py
index f2b7eeab..913d842a 100755
--- a/ament_clang_tidy/ament_clang_tidy/main.py
+++ b/ament_clang_tidy/ament_clang_tidy/main.py
@@ -277,9 +277,13 @@ def get_compilation_db_files(paths):
     for path in paths:
         if os.path.isdir(path):
             for dirpath, dirnames, filenames in os.walk(path):
-                if 'AMENT_IGNORE' in dirnames + filenames:
-                    dirnames[:] = []
-                    continue
+                # NOTE: here we don't check for the AMENT_IGNORE file.
+                # This function tries to find compile_commands.json file in the build folders.
+                # Build folders always include a AMENT_IGNORE file, so checking for it would
+                # result in not finding any compilation db. The check would also be redundant
+                # because if a source folder was marked with AMENT_IGNORE, then
+                # the compile_commands.json will not be present in relevant build folder.
+
                 # ignore folder starting with . or _
                 dirnames[:] = [d for d in dirnames if d[0] not in ['.', '_']]
                 dirnames.sort()