1 files changed, 3 insertions, 2 deletions

diff --git a/src/pruning.c b/src/pruning.c
index 3ca9fac..a5e60ce 100644
--- a/src/pruning.c
+++ b/src/pruning.c
@@ -355,7 +355,7 @@ instance_fixnasty(void *arg)
 
         td = (ThreadDataGenpt *)arg;
         nb = td->pd->coord->max / td->pd->coord->base->max;
-        blocksize = (uint64_t)((nb / td->nthreads) * td->pd->coord->base->max);
+        blocksize = (td->pd->coord->base->max / td->nthreads) * nb;
         rmin = ((uint64_t)td->thid) * blocksize;
         rmax = td->thid == td->nthreads - 1 ?
                td->pd->coord->max :
@@ -373,7 +373,8 @@ instance_fixnasty(void *arg)
                                 ii = td->pd->coord->transform(t, i);
                                 if (ii < rmin || ii >= rmax)
                                         fprintf(stderr,
-                                            "Error: transformed out of bound!\n");
+                                            "Error: transformed out of bound! "
+                                            "%lu %lu %lu\n", ii, rmin, rmax);
                                 if (ptableval_index(td->pd, ii) > td->d) {
                                         ptable_update_index(td->pd, ii, td->d);
                                         updated++;