diff --git a/dune/istl/test/CMakeLists.txt b/dune/istl/test/CMakeLists.txt
index 50217e1a03ce8e5f4662828968621cb1a1932c32..107e3a39640a95bc24b4e71aa2a2e5ee59a9897a 100644
--- a/dune/istl/test/CMakeLists.txt
+++ b/dune/istl/test/CMakeLists.txt
@@ -93,12 +93,16 @@ dune_add_test(SOURCES cholmodtest.cc)
 
 # MPI tests
 dune_add_test(SOURCES matrixredisttest.cc
+              MPI_RANKS 1 2 4
+              TIMEOUT 600
               CMAKE_GUARD MPI_FOUND)
 
 dune_add_test(SOURCES vectorcommtest.cc
+              MPI_RANKS 1 2 4
+              TIMEOUT 600
               CMAKE_GUARD MPI_FOUND)
 
-  dune_add_test(SOURCES matrixmarkettest.cc)
+dune_add_test(SOURCES matrixmarkettest.cc)
 
 dune_add_test(SOURCES iluildltest.cc)