diff --git a/src/gpu/VirtualFluids_GPU/GPU/Calc2ndMoments27.cu b/src/gpu/VirtualFluids_GPU/GPU/Calc2ndMoments27.cu
index c83e2ce4e3cd0dbffd1236e593b9464931e92c50..2e0a0e4892f554ed9201483c3c7c73034795e6f2 100644
--- a/src/gpu/VirtualFluids_GPU/GPU/Calc2ndMoments27.cu
+++ b/src/gpu/VirtualFluids_GPU/GPU/Calc2ndMoments27.cu
@@ -293,7 +293,7 @@ extern "C" __global__ void LBCalc2ndMomentsCompSP27(real* kxyFromfcNEQ,
    {
       //////////////////////////////////////////////////////////////////////////
       //index
-      //unsigned int kzero= k;
+      unsigned int kzero= k;
       unsigned int ke   = k;
       unsigned int kw   = neighborX[k];
       unsigned int kn   = k;