diff --git a/src/initialize.cpp b/src/initialize.cpp
index 4b821bee14..c5803976bd 100644
--- a/src/initialize.cpp
+++ b/src/initialize.cpp
@@ -157,7 +157,7 @@ void initialize_mpi(MPI_Comm intracomm)
 
   // Create bank datatype
   SourceSite b;
-  MPI_Aint disp[10];
+  MPI_Aint disp[11];
   MPI_Get_address(&b.r, &disp[0]);
   MPI_Get_address(&b.u, &disp[1]);
   MPI_Get_address(&b.E, &disp[2]);