diff --git a/appl/ftp/ftp/cmds.c b/appl/ftp/ftp/cmds.c
index c86a323fb..44950b712 100644
--- a/appl/ftp/ftp/cmds.c
+++ b/appl/ftp/ftp/cmds.c
@@ -690,7 +690,7 @@ mget(int argc, char **argv)
 		if (mflag && confirm(argv[0], cp)) {
 			tp = cp;
 			if (mcase) {
-				for (tp2 = tmpbuf; ch = *tp++;)
+				for (tp2 = tmpbuf; (ch = *tp++);)
 					*tp2++ = isupper(ch) ? tolower(ch) : ch;
 				*tp2 = '\0';
 				tp = tmpbuf;