diff --git a/src/options.rs b/src/options.rs
index e385490..f6f18d6 100644
--- a/src/options.rs
+++ b/src/options.rs
@@ -292,6 +292,12 @@ impl fmt::Display for ExporterOptions {
             &self.exporter_metrics_enabled,
         );
 
+        output.push('\n');
+        output.push_str(&format!(
+            "exporter_metrics_namespace: {}",
+            self.exporter_metrics_namespace
+        ));
+
         output.push('\n');
         output.push_str(&format!(
             "exporter_metadata_refresh_interval: {:?}",