diff --git a/Source/XTool/xerrhand.h b/Source/XTool/xerrhand.h
index 9d891b310..ce1e1db0d 100644
--- a/Source/XTool/xerrhand.h
+++ b/Source/XTool/xerrhand.h
@@ -47,11 +47,11 @@ struct XErrorHandler
 	void	 SetRestore(void (*rf)());
     void	 SetCrash(void (*cf)());
 	void	 SetState(int s){state=s;}
-	void	 Abort(const char* message, int code = XERR_USER, int addval = -1, const char* subj = NULL);
-    void	 Abort(const std::string& message, int code = XERR_USER, int addval = -1, const char* subj = NULL);
+    [[noreturn]] void	 Abort(const char* message, int code = XERR_USER, int addval = -1, const char* subj = NULL);
+    [[noreturn]] void	 Abort(const std::string& message, int code = XERR_USER, int addval = -1, const char* subj = NULL);
     bool     ShowErrorMessage(const char* message);
-	void	 Exit();
-	void	 RTC(const char *file,unsigned int line, const char *expr);
+    [[noreturn]] void	 Exit();
+    [[noreturn]] void	 RTC(const char *file,unsigned int line, const char *expr);
 };
 
 std::string decodeStackAddress(const void* addr);