diff --git a/releasenotes.md b/releasenotes.md
index c0f560a2e..a5c22aaa4 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -87,6 +87,7 @@
 - `@test`/`@benchmark` on module would attach to interface and regular methods.
 - Deprecated `@select` in favor of `???`.
 - Enum inference, like `Foo x = $eval("A")`, now works correctly for `$eval`.
+- Fix regression where files were added more than once. #2442
 
 ### Stdlib changes
 - Add `==` to `Pair`, `Triple` and TzDateTime. Add print to `Pair` and `Triple`.
diff --git a/src/build/builder.c b/src/build/builder.c
index 7950de9bc..181ed1560 100644
--- a/src/build/builder.c
+++ b/src/build/builder.c
@@ -622,7 +622,7 @@ static void update_build_target_from_options(BuildTarget *target, BuildOptions *
 void init_default_build_target(BuildTarget *target, BuildOptions *options)
 {
 	*target = default_build_target;
-	target->source_dirs = options->files;
+	target->source_dirs = NULL;
 	target->name = options->output_name;
 	target->output_name = options->output_name;
 	update_build_target_from_options(target, options);