diff --git a/AMDiS/src/ProblemVec.h b/AMDiS/src/ProblemVec.h
index 37eb19852ca365940ee2a4003a160a6acebbcdf3..de21bbd32cf7a06743137ceafaf91b630c2e86ee 100644
--- a/AMDiS/src/ProblemVec.h
+++ b/AMDiS/src/ProblemVec.h
@@ -468,7 +468,7 @@ namespace AMDiS {
 
 
     /// Returns \ref fileWriters.
-    std::vector<FileWriterInterface*> getFileWriterList() {
+    std::vector<FileWriterInterface*>& getFileWriterList() {
       return fileWriters;
     }