diff --git a/include/tthread.h b/include/tthread.h
index 2b2fb2d..5fd11cb 100644
--- a/include/tthread.h
+++ b/include/tthread.h
@@ -1,4 +1,4 @@
-#ifndef _TTHERAD_H_
+#ifndef _TTHREAD_H_
 #define _TTHREAD_H_
 
 #include "sysenv.h"
@@ -32,11 +32,11 @@ typedef pthread_cond_t COND;
 #endif
 #endif
 
-// #ifdef __cplusplus
-// extern "C" {
-// #endif
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
 
-enum {
+enum ERR_THREAD {
 	ERR_THREAD_SUCCESS,
 
 	ERR_THREAD_CREATE,
@@ -291,8 +291,8 @@ static inline int tvsnprintf(MUTEX* mutex, char* const buffer,
 	return res;
 }
 
-// #ifdef __cplusplus
-// }
-// #endif
+ #ifdef __cplusplus
+ }
+ #endif
 
-#endif // _TTHREAD_H_
\ No newline at end of file
+#endif //_TTHREAD_H_
\ No newline at end of file