diff --git a/dune/common/test/iteratortest.hh b/dune/common/test/iteratortest.hh
index 94bca25a81030d67306ac4e7ee6c08c5ccd670dd..21193b6701c97a7716bc8f3eb84a384480e31b2b 100644
--- a/dune/common/test/iteratortest.hh
+++ b/dune/common/test/iteratortest.hh
@@ -182,7 +182,7 @@ int testRandomAccessIterator(Iter begin, Iter end, Opt opt){
     if(test != rand)
     {
       std::cerr << "i+=n should have the same result as applying the"
-                << "increment ooperator n times!"<< std::cerr;
+                << "increment ooperator n times!"<< std::endl;
       ret++;
     }
 
@@ -201,7 +201,7 @@ int testRandomAccessIterator(Iter begin, Iter end, Opt opt){
     if(test != rand)
     {
       std::cerr << "i+=n should have the same result as applying the"
-                << "increment ooperator n times!"<< std::cerr;
+                << "increment ooperator n times!"<< std::endl;
       ret++;
     }
   }