diff --git a/test/spdm-requester-emu/src/main.rs b/test/spdm-requester-emu/src/main.rs
index 6ce1ee1d..b2956b08 100644
--- a/test/spdm-requester-emu/src/main.rs
+++ b/test/spdm-requester-emu/src/main.rs
@@ -1345,7 +1345,7 @@ fn main() {
     use std::thread;
 
     thread::Builder::new()
-        .stack_size(EMU_STACK_SIZE * 2)
+        .stack_size(EMU_STACK_SIZE)
         .spawn(emu_main)
         .unwrap()
         .join()