diff --git a/src/mpi/msmpi/mpid/DynProcServer.cpp b/src/mpi/msmpi/mpid/DynProcServer.cpp
index a9b9485..3efd38e 100644
--- a/src/mpi/msmpi/mpid/DynProcServer.cpp
+++ b/src/mpi/msmpi/mpid/DynProcServer.cpp
@@ -292,7 +292,7 @@ AdjustBindingHost(
     RPC_STATUS status;
     HRESULT    hr;
 
-    char  friendlyName[MAX_COMPUTERNAME_LENGTH];
+    char  friendlyName[MAX_COMPUTERNAME_LENGTH+1];
     friendlyName[0] = '\0';
     DWORD err = MPIU_Getenv(
         "MSMPI_ACCEPT_HOST",