diff --git a/gcc/testsuite/gfortran.dg/submodule_7.f90 b/gcc/testsuite/gfortran.dg/submodule_7.f08
similarity index 97%
rename from gcc/testsuite/gfortran.dg/submodule_7.f90
rename to gcc/testsuite/gfortran.dg/submodule_7.f08
index fd1bee6296c2..a183f50e46cd 100644
--- a/gcc/testsuite/gfortran.dg/submodule_7.f90
+++ b/gcc/testsuite/gfortran.dg/submodule_7.f08
@@ -145,3 +145,5 @@ program main
   call verify_cleanup (c_1, c_2)
 !...
 end program main
+! { dg-final { cleanup-submodules "color_points@color_points_a" } }
+! { dg-final { cleanup-submodules "color_points@color_points_b" } }