diff --git a/cpu/D3Q7.cpp b/cpu/D3Q7.cpp
index 156d7b24..84ef46d1 100644
--- a/cpu/D3Q7.cpp
+++ b/cpu/D3Q7.cpp
@@ -85,8 +85,7 @@ extern "C" void SwapD3Q7(char *ID, double *disteven, double *distodd, int Nx, in
 {
 	int i,j,k,n,nn,N;
 	// distributions
-	double f1,f2,f3,f4,f5,f6,f7,f8,f9;
-	double f10,f11,f12,f13,f14,f15,f16,f17,f18;
+	double f1,f2,f3,f4,f5,f6;
 	
 	N = Nx*Ny*Nz;