diff --git a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
index b752b0e7856..c598d5e0731 100644
--- a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
+++ b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
@@ -72,6 +72,10 @@
 #  define LG_SIZEOF_PTR		3
 #endif
 
+#if LG_VADDR > 32
+#  define JEMALLOC_RETAIN
+#endif
+
 #ifndef JEMALLOC_TLS_MODEL
 #  define JEMALLOC_TLS_MODEL	/* Default. */
 #endif