diff --git a/cabal-install/cabal-install.cabal b/cabal-install/cabal-install.cabal
index 1c1a121ccd98b4e4862fba3dee4d466ec36414a2..786fd6a67ec41259b7d5ad69b8aa754441a85678 100644
--- a/cabal-install/cabal-install.cabal
+++ b/cabal-install/cabal-install.cabal
@@ -231,6 +231,7 @@ test-suite package-tests
   other-modules:
     PackageTests.Exec.Check
     PackageTests.Freeze.Check
+    PackageTests.MultipleSource.Check
     PackageTests.PackageTester
   build-depends:
     Cabal,