diff --git a/contrib/jemalloc/FREEBSD-diffs b/contrib/jemalloc/FREEBSD-diffs
index 8f4e2d8c812b..9e1939bfecfe 100644
--- a/contrib/jemalloc/FREEBSD-diffs
+++ b/contrib/jemalloc/FREEBSD-diffs
@@ -233,7 +233,7 @@ index 00000000..b752b0e7
 +#  define LG_SIZEOF_PTR		2
 +#endif
 +#ifdef __riscv
-+#  define LG_VADDR		64
++#  define LG_VADDR		48
 +#  define LG_SIZEOF_PTR		3
 +#endif
 +
diff --git a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
index c598d5e0731b..6ff0ce18d5da 100644
--- a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
+++ b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
@@ -68,7 +68,7 @@
 #  define LG_SIZEOF_PTR		2
 #endif
 #ifdef __riscv
-#  define LG_VADDR		64
+#  define LG_VADDR		48
 #  define LG_SIZEOF_PTR		3
 #endif