diff --git a/Source/Swig/swig.h b/Source/Swig/swig.h
index e0783da..523aef5 100644
--- a/Source/Swig/swig.h
+++ b/Source/Swig/swig.h
@@ -438,7 +438,7 @@
   extern void Language_replace_special_variables(String *method, String *tm, Parm *parm);
   extern void Swig_print(DOH *object, int count);
   extern void Swig_print_with_location(DOH *object, int count);
-  extern void SWIG_exit(int exit_code);
+  extern void SWIG_exit(int exit_code) __attribute__((noreturn));
 
 
 /* -- template init -- */