diff --git a/demos/smb/package.json b/demos/smb/package.json
index 3e369af..5a715df 100644
--- a/demos/smb/package.json
+++ b/demos/smb/package.json
@@ -20,6 +20,7 @@
     "build:tool": "%npm_package_config_merlin32% -V %npm_package_config_macros% ../../src/Master.s",
     "build:image": "build-image.bat %npm_package_config_cadius%",
     "build:swizzle": "./mkswizzetbl.sh > pal_w11.s",
+    "build:image:sim": "npm run build:sim && npm run build:image",
     "run:sim": "npm run build:sim && npm run build:image && npm run gsport",
     "debug": "\"%npm_package_config_crossrunner%\" SuperMarioGS -Source SuperMarioGS_S02__Output.txt -Source SuperMarioGS_S03__Output.txt -Debug -CompatibilityLayer"