diff --git a/compute_tools/src/compute.rs b/compute_tools/src/compute.rs
index 3546cb137c..846773a8e5 100644
--- a/compute_tools/src/compute.rs
+++ b/compute_tools/src/compute.rs
@@ -1443,8 +1443,8 @@ LIMIT 100",
                 .iter()
                 // should not be quoted as it's part of the command.
                 // is already sanitized so it's ok
-                .map(|p| serde_json::to_string(p).unwrap())
-                .collect::<Vec<String>>()
+                .map(|p| p.as_str())
+                .collect::<Vec<&'static str>>()
                 .join(", "),
             // quote the schema and role name as identifiers to sanitize them.
             schema_name.to_string().pg_quote(),
diff --git a/libs/compute_api/src/privilege.rs b/libs/compute_api/src/privilege.rs
index bdb8cfa753..dc0d870946 100644
--- a/libs/compute_api/src/privilege.rs
+++ b/libs/compute_api/src/privilege.rs
@@ -14,3 +14,22 @@ pub enum Privilege {
     Temporary,
     Execute,
 }
+
+impl Privilege {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            Privilege::Select => "SELECT",
+            Privilege::Insert => "INSERT",
+            Privilege::Update => "UPDATE",
+            Privilege::Delete => "DELETE",
+            Privilege::Truncate => "TRUNCATE",
+            Privilege::References => "REFERENCES",
+            Privilege::Trigger => "TRIGGER",
+            Privilege::Usage => "USAGE",
+            Privilege::Create => "CREATE",
+            Privilege::Connect => "CONNECT",
+            Privilege::Temporary => "TEMPORARY",
+            Privilege::Execute => "EXECUTE",
+        }
+    }
+}