diff --git a/templates/package-builder/src/yeoman/app/index.ts b/templates/package-builder/src/yeoman/app/index.ts
index 7da4b7a..0051c65 100644
--- a/templates/package-builder/src/yeoman/app/index.ts
+++ b/templates/package-builder/src/yeoman/app/index.ts
@@ -150,7 +150,7 @@ class MyGenerator extends yeoman.Base {
             if (typeof mappedFilename === 'string') {
                 outputFn = mappedFilename;
             } else {
-                fileIsExcludedByTemplateConfig = true;
+                fileIsExcludedByTemplateConfig = (mappedFilename === false);
             }
 
             // Decide whether to emit this file