diff --git a/telnet.c b/telnet.c
index 2b6cbd3..1bdbe3d 100644
--- a/telnet.c
+++ b/telnet.c
@@ -983,7 +983,7 @@ LIB3270_EXPORT void lib3270_data_recv(H3270 *hSession, size_t nr, const unsigned
 {
 	register const unsigned char * cp;
 
-	trace("%s: nr=%d",__FUNCTION__,nr);
+	trace("%s: nr=%d",__FUNCTION__,(int) nr);
 
 	trace_netdata(hSession, '<', netrbuf, nr);
 
--
libgit2 0.21.2