diff --git a/src/amdis/Integrate.hpp b/src/amdis/Integrate.hpp
index a94e9781250b739ab7eba6f596b3c3408f2139ab..ccc9697b813261f6f717e65128615486b731560b 100644
--- a/src/amdis/Integrate.hpp
+++ b/src/amdis/Integrate.hpp
@@ -28,7 +28,7 @@ namespace AMDiS
         localFct.unbind();
       }
 
-      return result;
+      return gridView.comm().sum(result);
     }
 
     template <class GF, class GV, class QP>