diff --git a/gpu/Color.cu b/gpu/Color.cu
index 7fd87e30..aeeb3998 100644
--- a/gpu/Color.cu
+++ b/gpu/Color.cu
@@ -1241,7 +1241,7 @@ __global__  void dvc_ScaLBL_SetSlice_z(double *Phi, double value, int Nx, int Ny
 
 
 __global__  void dvc_ScaLBL_CopySlice_z(double *Phi, int Nx, int Ny, int Nz, int Source, int Dest){
-	int n; double value;
+	double value;
 	int n =  blockIdx.x*blockDim.x + threadIdx.x;
 	if (n < Nx*Ny){
 		value = Phi[Source*Nx*Ny+n];