diff --git a/thread/thread.c b/thread/thread.c
index c4baecf..e059edf 100644
--- a/thread/thread.c
+++ b/thread/thread.c
@@ -268,8 +268,8 @@ static void _catch_signals(void)
 }
 
 
-thread_type *thread_create_c(char *name, void *(*start_routine)(void *),
-        void *arg, int detached, int line, char *file)
+thread_type *thread_create_c(const char *name, void *(*start_routine)(void *),
+        void *arg, int detached, int line, const char *file)
 {
     thread_type *thread = NULL;
     thread_start_t *start = NULL;
diff --git a/thread/thread.h b/thread/thread.h
index d2c3be3..e9b1e9b 100644
--- a/thread/thread.h
+++ b/thread/thread.h
@@ -168,8 +168,8 @@ void thread_initialize_with_log_id(int log_id);
 void thread_shutdown(void);
 
 /* creation, destruction, locking, unlocking, signalling and waiting */
-thread_type *thread_create_c(char *name, void *(*start_routine)(void *), 
-        void *arg, int detached, int line, char *file);
+thread_type *thread_create_c(const char *name, void *(*start_routine)(void *),
+        void *arg, int detached, int line, const char *file);
 void thread_mutex_create_c(mutex_t *mutex, int line, char *file);
 void thread_mutex_lock_c(mutex_t *mutex, int line, char *file);
 void thread_mutex_unlock_c(mutex_t *mutex, int line, char *file);