diff --git a/nexus/analyzer/src/lib.rs b/nexus/analyzer/src/lib.rs
index 7e791860a..0372e87fd 100644
--- a/nexus/analyzer/src/lib.rs
+++ b/nexus/analyzer/src/lib.rs
@@ -663,7 +663,7 @@ fn parse_db_options(
             Some(config)
         }
         DbType::Eventhub => {
-            let conn_str = opts.get("metadata_db").map(|s| s.to_string());
+            let conn_str = opts.get("metadata_db");
             let metadata_db = parse_metadata_db_info(conn_str)?;
             let subscription_id = opts
                 .get("subscription_id")
@@ -708,7 +708,7 @@ fn parse_db_options(
             Some(config)
         }
         DbType::S3 => {
-            let s3_conn_str = opts.get("metadata_db").map(|s| s.to_string());
+            let s3_conn_str = opts.get("metadata_db");
             let metadata_db = parse_metadata_db_info(s3_conn_str)?;
             let s3_config = S3Config {
                 url: opts
@@ -748,7 +748,7 @@ fn parse_db_options(
             Some(config)
         }
         DbType::EventhubGroup => {
-            let conn_str = opts.get("metadata_db").map(|s| s.to_string());
+            let conn_str = opts.get("metadata_db");
             let metadata_db = parse_metadata_db_info(conn_str)?;
 
             // metadata_db is required for eventhub group
@@ -800,7 +800,7 @@ fn parse_db_options(
     Ok(config)
 }
 
-fn parse_metadata_db_info(conn_str: Option<String>) -> anyhow::Result<Option<PostgresConfig>> {
+fn parse_metadata_db_info(conn_str: Option<&str>) -> anyhow::Result<Option<PostgresConfig>> {
     let conn_str = match conn_str {
         Some(conn_str) => conn_str,
         None => return Ok(None),