diff --git a/bin/now-deploy b/bin/now-deploy
index b11dc4d..22d67ed 100755
--- a/bin/now-deploy
+++ b/bin/now-deploy
@@ -301,8 +301,10 @@ async function sync (token) {
 
     return [
       key,
-      // add support for escaping the @ as \@
-      val.replace(/^\\@/, '@')
+      typeof val === 'string'
+        // add support for escaping the @ as \@
+        ? val.replace(/^\\@/, '@')
+        : val
     ];
   }));