diff --git a/nr-common/utils.ts b/nr-common/utils.ts
index 287e29b..0f1e12e 100644
--- a/nr-common/utils.ts
+++ b/nr-common/utils.ts
@@ -64,7 +64,11 @@ export function createLabelTags(
 ) {
   const tags = [
     ["L", labelName],
-    ["l", ...labelValue, labelName],
+    [
+      "l",
+      ...(Array.isArray(labelValue) ? labelValue : [labelValue]),
+      labelName,
+    ],
   ];
   return tags;
 }