diff --git a/tests/testVectorize.c b/tests/testVectorize.c
index 6c11446e4f9b6dce189e6a03925cd2e61ee650f5..78124f00e9b2b11030e1b5d8ee2fa609dd06e7ae 100644
--- a/tests/testVectorize.c
+++ b/tests/testVectorize.c
@@ -43,6 +43,10 @@ struct cell *make_cell(size_t n, double *offset, double h,
   cell->split = 0;
   cell->h_max = h;
   cell->count = count;
+  cell->dx_max = 1.;
+  cell->h[0] = n;
+  cell->h[1] = n;
+  cell->h[2] = n;
 
   cell->sort = malloc(13 * count * sizeof *cell->sort);
   runner_dosort(NULL, cell, 0x1FFF, 0);