diff --git a/tftp/main.c b/tftp/main.c
index 1b8a881..b2f9059 100644
--- a/tftp/main.c
+++ b/tftp/main.c
@@ -188,7 +188,7 @@ char *xstrdup(const char *);
 
 const char *program;
 
-static inline void usage(int errcode)
+static void usage(int errcode)
 {
     fprintf(stderr,
 #ifdef HAVE_IPV6