diff --git a/RTCP/Cobalt/GPUProc/src/cuda/Kernels/ZeroingKernel.cc b/RTCP/Cobalt/GPUProc/src/cuda/Kernels/ZeroingKernel.cc
index 3d5c66660e5c1073bea9b9799ca0eb2590ef93df..4d0d9a1e8cab696c808f26a988f3d628f840c9ce 100644
--- a/RTCP/Cobalt/GPUProc/src/cuda/Kernels/ZeroingKernel.cc
+++ b/RTCP/Cobalt/GPUProc/src/cuda/Kernels/ZeroingKernel.cc
@@ -113,7 +113,7 @@ namespace LOFAR
       computeMaskTimer.stop();
 
       // Copy host buffer to GPU
-      itsStream.writeBuffer(gpuMask, hostRanges, false);
+      itsStream.writeBuffer(gpuMask, hostMask, false);
 
       Kernel::enqueue(blockId);
     }