diff --git a/include/jemalloc/internal/jemalloc_internal_defs.h.in b/include/jemalloc/internal/jemalloc_internal_defs.h.in
index f5d94ee7..b1e8685d 100644
--- a/include/jemalloc/internal/jemalloc_internal_defs.h.in
+++ b/include/jemalloc/internal/jemalloc_internal_defs.h.in
@@ -245,6 +245,7 @@
 /*
  * popcount*() functions to use for bitmapping.
  */
+#undef JEMALLOC_INTERNAL_POPCOUNTLL
 #undef JEMALLOC_INTERNAL_POPCOUNTL
 #undef JEMALLOC_INTERNAL_POPCOUNT