diff --git a/node_modules/architect-build/build.js b/node_modules/architect-build/build.js
index 429b9176..0b7cc011 100644
--- a/node_modules/architect-build/build.js
+++ b/node_modules/architect-build/build.js
@@ -77,7 +77,7 @@ function build(config, opts, callback){
             if (added[pkg.id])
                 return;
             added[pkg.id] = true;
-            if (!pkg.source)
+            if (pkg.source == null)
                 return;
             if (pkg.deps)
                 pkg.deps.forEach(addModule);