diff --git a/os/src/syscall/mod.rs b/os/src/syscall/mod.rs
index eac72aae..c19c3fdf 100644
--- a/os/src/syscall/mod.rs
+++ b/os/src/syscall/mod.rs
@@ -54,7 +54,7 @@ pub fn syscall(syscall_id: usize, args: [usize; 3]) -> isize {
         SYSCALL_MUTEX_CREATE => sys_mutex_create(args[0] == 1),
         SYSCALL_MUTEX_LOCK => sys_mutex_lock(args[0]),
         SYSCALL_MUTEX_UNLOCK => sys_mutex_unlock(args[0]),
-        SYSCALL_SEMAPHORE_CREATE => sys_semaphore_creare(args[0]),
+        SYSCALL_SEMAPHORE_CREATE => sys_semaphore_create(args[0]),
         SYSCALL_SEMAPHORE_UP => sys_semaphore_up(args[0]),
         SYSCALL_SEMAPHORE_DOWN => sys_semaphore_down(args[0]),
         _ => panic!("Unsupported syscall_id: {}", syscall_id),
diff --git a/os/src/syscall/sync.rs b/os/src/syscall/sync.rs
index 4a2ac1d9..f49f1222 100644
--- a/os/src/syscall/sync.rs
+++ b/os/src/syscall/sync.rs
@@ -53,7 +53,7 @@ pub fn sys_mutex_unlock(mutex_id: usize) -> isize {
     0
 }
 
-pub fn sys_semaphore_creare(res_count: usize) -> isize {
+pub fn sys_semaphore_create(res_count: usize) -> isize {
     let process = current_process();
     let mut process_inner = process.inner_exclusive_access();
     let id = if let Some(id) = process_inner