diff --git a/README.md b/README.md
index 8b99f8a..8bf02f0 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-A simple app to display Occlum /dev/sgx IOCTL codes and needed types
+A simple app to display Occlum /dev/sgx IOCTL codes in hex and needed types</br>
 Doesn't have any dependencies, run with `cargo run`
diff --git a/src/main.rs b/src/main.rs
index 6191c88..18a965c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,7 +3,7 @@ mod types;
 use types::*;
 
 fn main() {
-    println!("Occlum /dev/sgx IOCTL codes:");
+    println!("Occlum /dev/sgx IOCTL codes in hex:");
 
     println!("SGX_CMD_NUM_IS_EDMM_SUPPORTED            {:x}", SGX_CMD_NUM_IS_EDMM_SUPPORTED);
     println!("SGX_CMD_NUM_GET_EPID_GROUP_ID            {:x}", SGX_CMD_NUM_GET_EPID_GROUP_ID);