diff --git a/programs/mango-v4/tests/program_test/mango_client.rs b/programs/mango-v4/tests/program_test/mango_client.rs
index 4c6d77c84..e3deb321e 100644
--- a/programs/mango-v4/tests/program_test/mango_client.rs
+++ b/programs/mango-v4/tests/program_test/mango_client.rs
@@ -792,7 +792,7 @@ impl<'keypair> ClientInstruction for Serum3RegisterMarketInstruction<'keypair> {
         let program_id = mango_v4::id();
         let instruction = Self::Instruction {
             market_index: self.market_index,
-            name: "some_ticker/usdc".to_string(),
+            name: "UUU/usdc".to_string(),
         };
 
         let serum_market = Pubkey::find_program_address(