diff --git a/helpers/GenerateResourcesAndImage.ps1 b/helpers/GenerateResourcesAndImage.ps1
index 6a7f864d1..d90dc87c6 100644
--- a/helpers/GenerateResourcesAndImage.ps1
+++ b/helpers/GenerateResourcesAndImage.ps1
@@ -266,7 +266,11 @@ Function GenerateResourcesAndImage {
         }
         
         if ($builderScriptPath.Contains("pkr.hcl")) {
-            $AgentIp = '[ \"{0}\" ]' -f $AgentIp
+            if ($AgentIp) {
+                $AgentIp = '[ \"{0}\" ]' -f $AgentIp
+            } else {
+                $AgentIp = "[]"
+            }
         }
 
         if ($Tags) {