diff --git a/packages/string-templates/src/custom/preprocessor.js b/packages/string-templates/src/custom/preprocessor.js
index ffd81f1693..2cca671e7f 100644
--- a/packages/string-templates/src/custom/preprocessor.js
+++ b/packages/string-templates/src/custom/preprocessor.js
@@ -74,7 +74,7 @@ const PROCESSORS = [
       insideStatement = `(${insideStatement})`
     }
     return `{{ all ${insideStatement} }}`
-  })
+  }),
 ]
 
 /**