diff --git a/SMP/libgmp.def b/SMP/libgmp.def
index 289f0e2d1..632274ab2 100644
--- a/SMP/libgmp.def
+++ b/SMP/libgmp.def
@@ -16,6 +16,7 @@ __gmp_randclear
 __gmp_urandomb_ui
 __gmp_urandomm_ui
 __gmp_asprintf
+__gmp_vasprintf
 __gmp_fprintf
 __gmp_printf
 __gmp_snprintf