1 files changed, 2 insertions, 1 deletions
diff --git a/fmtutils.h b/fmtutils.h
index d4a171d8..838948bc 100644
--- a/fmtutils.h
+++ b/fmtutils.h
@@ -44,7 +44,8 @@ void	pcap_fmt_errmsg_for_errno(char *, size_t, int,
     PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(4, 5);
 
 #ifdef _WIN32
-void	pcap_win32_err_to_str(DWORD, char *);
+void	pcap_fmt_errmsg_for_win32_err(char *, size_t, DWORD,
+    PCAP_FORMAT_STRING(const char *), ...) PCAP_PRINTFLIKE(4, 5);
 #endif
 
 #ifdef __cplusplus