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-rw-r--r--vppinfra/vppinfra/format.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/vppinfra/vppinfra/format.h b/vppinfra/vppinfra/format.h
index c91cc747..bc0d6d15 100644
--- a/vppinfra/vppinfra/format.h
+++ b/vppinfra/vppinfra/format.h
@@ -47,8 +47,8 @@
typedef u8 *(format_function_t) (u8 * s, va_list * args);
-u8 *va_format (u8 * s, char *format, va_list * args);
-u8 *format (u8 * s, char *format, ...);
+u8 *va_format (u8 * s, const char *format, va_list * args);
+u8 *format (u8 * s, const char *format, ...);
#ifdef CLIB_UNIX