diff --git a/mesonbuild/interpreter/interpreter.py b/mesonbuild/interpreter/interpreter.py
index a65647580b2a..a56e922e66d8 100644
--- a/mesonbuild/interpreter/interpreter.py
+++ b/mesonbuild/interpreter/interpreter.py
@@ -3103,6 +3103,9 @@ def source_strings_to_files(self, sources: T.List[T.Union[mesonlib.FileOrString,
     @T.overload
     def source_strings_to_files(self, sources: T.List['SourceInputs'], strict: bool = True) -> T.List['SourceOutputs']: ... # noqa: F811
 
+    @T.overload
+    def source_strings_to_files(self, sources: T.List[SourcesVarargsType], strict: bool = True) -> T.List['SourceOutputs']: ... # noqa: F811
+
     def source_strings_to_files(self, sources: T.List['SourceInputs'], strict: bool = True) -> T.List['SourceOutputs']: # noqa: F811
         """Lower inputs to a list of Targets and Files, replacing any strings.