diff --git a/exporters/prometheus/src/exporter_utils.cc b/exporters/prometheus/src/exporter_utils.cc
index 4e5b75707a..a54fb3e429 100644
--- a/exporters/prometheus/src/exporter_utils.cc
+++ b/exporters/prometheus/src/exporter_utils.cc
@@ -31,9 +31,6 @@ namespace metrics
 namespace
 {
 
-static constexpr const char *kPrometheusInstance = "instance";
-static constexpr const char *kPrometheusJob      = "job";
-
 /**
  * Sanitize the given metric name by replacing invalid characters with _,
  * ensuring that multiple consecutive _ characters are collapsed to a single _.