diff --git a/tests/test_compiler.py b/tests/test_compiler.py
index ad69f39..95536bf 100644
--- a/tests/test_compiler.py
+++ b/tests/test_compiler.py
@@ -405,6 +405,7 @@ def test_get_compiler_settings(project, compiler):
         "contracts/Imports.sol",
         "contracts/MissingPragma.sol",
         "contracts/NumerousDefinitions.sol",
+        "contracts / Source.extra.ext.sol",
         "contracts/subfolder/Relativecontract.sol",
     ]
     assert actual_files == expected_files