diff --git a/tools/mksyscall.c b/tools/mksyscall.c
index 21fe29d768..8d81249018 100644
--- a/tools/mksyscall.c
+++ b/tools/mksyscall.c
@@ -199,12 +199,6 @@ static void generate_proxy(int nfixed, int nparms)
           g_parm[NAME_INDEX]);
   fprintf(stream, "#include <nuttx/config.h>\n");
 
-  /* Suppress "'noreturn' function does return" warnings. */
-
-  fprintf(stream, "#include <nuttx/compiler.h>\n");
-  fprintf(stream, "#undef noreturn_function\n");
-  fprintf(stream, "#define noreturn_function\n");
-
   /* Does this function have a variable number of parameters?  If so then the
    * final parameter type will be encoded as "..."
    */