diff --git a/test/porousmediumflow/1p/sequential/CMakeLists.txt b/test/porousmediumflow/1p/sequential/CMakeLists.txt
index 907b6f26b6cc643a22e34aeccff05a63bd2d3e27..913419d690aee6130674a63de0d541d41a56ed7c 100644
--- a/test/porousmediumflow/1p/sequential/CMakeLists.txt
+++ b/test/porousmediumflow/1p/sequential/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_input_file_links()
+dune_symlink_to_source_files(FILES grids)
 
 dune_add_test(NAME test_dec1p
                SOURCES test_1p.cc
diff --git a/test/porousmediumflow/2p/sequential/CMakeLists.txt b/test/porousmediumflow/2p/sequential/CMakeLists.txt
index 1c5f8dd5780de2973b79bacac47a82f4037a2f19..4fd1959d91f2a3ff6d9c306cae6c6bca976d185d 100644
--- a/test/porousmediumflow/2p/sequential/CMakeLists.txt
+++ b/test/porousmediumflow/2p/sequential/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_input_file_links()
+dune_symlink_to_source_files(FILES grids)
 
 dune_add_test(NAME test_impes
               SOURCES test_impes.cc