diff --git a/src/tests/zaxis.cpp b/src/tests/zaxis.cpp
index 047446223..3174379c9 100644
--- a/src/tests/zaxis.cpp
+++ b/src/tests/zaxis.cpp
@@ -223,7 +223,7 @@ TEST_CASE("ZAxis") {
     CHECK(ncplane_below(c) == d);
     CHECK(ncplane_below(d) == e);
     CHECK(ncplane_below(e) == n_);
-    CHECK(ncplane_bottom(n_) == n_);
+    CHECK(ncpile_bottom(n_) == n_);
     ncplane_move_family_bottom(c);
     // ABDsCE, E is bound to C (FIXME have ABDEsC)
     CHECK(ncpile_top(n_) == a);