diff --git a/crates/test-cli/src/lib.rs b/crates/test-cli/src/lib.rs
index d4e18eb4c..4d82ab622 100644
--- a/crates/test-cli/src/lib.rs
+++ b/crates/test-cli/src/lib.rs
@@ -574,7 +574,11 @@ pub async fn run_command(
         },
         CliCommand::GetOracleHeadings => {
             let oracles_data = get_oracle_headings(&api, &rpc).await?;
-            Ok(format!("{:?}", oracles_data))
+            if cli.json {
+                Ok(serde_json::to_string_pretty(&oracles_data)?)
+            } else {
+                Ok(format!("{:?}", oracles_data))
+            }
         },
         CliCommand::GetTdxQuote { tss_endpoint, output_filename } => {
             let quote_bytes =