diff --git a/src/collectors/collector.ts b/src/collectors/collector.ts
index 5386aab..1dc1b14 100644
--- a/src/collectors/collector.ts
+++ b/src/collectors/collector.ts
@@ -43,6 +43,10 @@ export abstract class Collector {
       ? this.commonOptions.metricsPrefix.slice(0, -1)
       : this.commonOptions.metricsPrefix
 
+    if (!prefix.length) {
+      return name
+    }
+
     return [prefix, name].join('_')
   }