diff --git a/tools/libxl/libxl_dom.c b/tools/libxl/libxl_dom.c
index d519c8d440..0b6d81e53a 100644
--- a/tools/libxl/libxl_dom.c
+++ b/tools/libxl/libxl_dom.c
@@ -416,7 +416,7 @@ int libxl__build_pre(libxl__gc *gc, uint32_t domid,
         return ERROR_FAIL;
     }
 
-    if (xc_domain_setmaxmem(ctx->xch, domid, info->target_memkb + size) < 0) {
+    if (xc_domain_setmaxmem(ctx->xch, domid, info->max_memkb + size) < 0) {
         LOGE(ERROR, "Couldn't set max memory");
         return ERROR_FAIL;
     }