1 files changed, 3 insertions, 3 deletions

diff --git a/src/solve_h48.h b/src/solve_h48.h
index a2e3184..ecb0863 100644
--- a/src/solve_h48.h
+++ b/src/solve_h48.h
@@ -288,9 +288,9 @@ gendata_esep_bfs(bfsarg_esep_t *arg)
                         set_esep_pval(arg->buf32, j, arg->depth);
                         cc += x != arg->depth;
                         cocsep_coord = j / H48_ESIZE(arg->h);
-                        sim = arg->selfsim[cocsep_coord];
-                        for (t = 1; t < 48; t++) { /* Skip trivial trans */
-                                if (!(sim & (1ULL << t)))
+                        sim = arg->selfsim[cocsep_coord] >> 1ULL;
+                        for (t = 1; t < 48 && sim; t++, sim >>= 1ULL) {
+                                if (!(sim & 1ULL))
                                         continue;
                                 transd = transform(moved, t);
                                 k = coord_h48(transd, arg->cocsepdata, arg->h);