diff --git a/Grid/algorithms/FFT.h b/Grid/algorithms/FFT.h
index 524a22d9..de621387 100644
--- a/Grid/algorithms/FFT.h
+++ b/Grid/algorithms/FFT.h
@@ -140,7 +140,7 @@ public:
     
   inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
     if ( sign == forward ) cufftExecZ2Z(p,in,out,CUFFT_FORWARD);
-    else                   cufftExecZ2Z(p,in,out,CUFFT_BACKWARD);
+    else                   cufftExecZ2Z(p,in,out,CUFFT_INVERSE);
     accelerator_barrier();
   }
   inline static void fftw_destroy_plan(const FFTW_plan p) {
@@ -167,7 +167,7 @@ public:
     
   inline static void fftw_execute_dft(const FFTW_plan p,FFTW_scalar *in,FFTW_scalar *out, int sign) {
     if ( sign == forward ) cufftExecC2C(p,in,out,CUFFT_FORWARD);
-    else                   cufftExecC2C(p,in,out,CUFFT_BACKWARD);
+    else                   cufftExecC2C(p,in,out,CUFFT_INVERSE);
     accelerator_barrier();
   }
   inline static void fftw_destroy_plan(const FFTW_plan p) {
diff --git a/Grid/communicator/Communicator_mpi3.cc b/Grid/communicator/Communicator_mpi3.cc
index b725a681..3b8561d3 100644
--- a/Grid/communicator/Communicator_mpi3.cc
+++ b/Grid/communicator/Communicator_mpi3.cc
@@ -349,7 +349,6 @@ void CartesianCommunicator::SendToRecvFromBegin(std::vector<MpiCommsRequest_t> &
 
   GRID_ASSERT(dest != _processor);
   GRID_ASSERT(from != _processor);
-  GRID_ASSERT(bytes/(sizeof(int32_t))<= 2*1024*1024*1024);
   int tag;
 
   tag= dir+from*32;