diff --git a/solana/agent/src/main.rs b/solana/agent/src/main.rs
index bc3c12296..9f4f2b8ba 100644
--- a/solana/agent/src/main.rs
+++ b/solana/agent/src/main.rs
@@ -110,7 +110,7 @@ impl Agent for AgentImpl {
                 })),
                 Err(e) => Err(Status::new(
                     Code::Internal,
-                    format!("tx sending failed: {}", e),
+                    format!("tx sending failed: {:?}", e),
                 )),
             }
         })