diff --git a/slicetimer.cc b/slicetimer.cc
index 995fa4cf7be5346193b75df213e5360ef79a42eb..7b14d645c3d0df2f78fbe57ad519215481b07537 100644
--- a/slicetimer.cc
+++ b/slicetimer.cc
@@ -140,7 +140,7 @@ int do_slice_correction()
 	ColumnVector interpseries = voxeltimeseries;
 	for (int time_step=1; time_step <= no_volumes; time_step++){
 	  // interpseries(time_step) = interpolate_1d(voxeltimeseries, time_step + offset + recenter);
-	  interpseries(time_step) = kernelinterpolation_1d(voxeltimeseries, time_step + offset + recenter, userkernel, 3);
+	  interpseries(time_step) = kernelinterpolation_1d(voxeltimeseries, time_step + offset + recenter, userkernel, 7);
 	}
 	timeseries.setvoxelts(interpseries,x_pos,y_pos,slice-1);
       }