diff --git a/libf2c/main.c b/libf2c/main.c
index d95fdc9..ac82f68 100644
--- a/libf2c/main.c
+++ b/libf2c/main.c
@@ -105,9 +105,9 @@ char **xargv;
 
  int
 #ifdef KR_headers
-main(argc, argv) int argc; char **argv;
+m(argc, argv) int argc; char **argv;
 #else
-main(int argc, char **argv)
+m(int argc, char **argv)
 #endif
 {
 xargc = argc;