diff --git a/scripts/mk-omap-image.c b/scripts/mk-omap-image.c
index 1d61a34..234b7e3 100644
--- a/scripts/mk-omap-image.c
+++ b/scripts/mk-omap-image.c
@@ -49,7 +49,7 @@
 #include <getopt.h>
 #include <endian.h>
 
-void usage(char *prgname)
+static void usage(char *prgname)
 {
 	printf("usage: %s [OPTION] FILE > IMAGE\n"
 	       "\n"