diff -ur lynx2.9.0dev.3.orig/WWW/Library/Implementation/HTGopher.c lynx2.9.0dev.3/WWW/Library/Implementation/HTGopher.c
--- lynx2.9.0dev.3.orig/WWW/Library/Implementation/HTGopher.c	2019-08-25 21:59:48.000000000 +0200
+++ lynx2.9.0dev.3/WWW/Library/Implementation/HTGopher.c	2019-08-26 17:31:42.000000000 +0200
@@ -343,8 +343,8 @@
 			    junk = StrChr(port, TAB);
 			    if (junk)
 				*junk = '\0';	/* Chop port */
-			    if ((port[1] == '0') && (!port[2]))
-				port[0] = '\0';		/* 0 means none */
+			    if (!strcmp(port, ":0") || !strcmp(port, ":70"))
+				port[0] = '\0';		/* 0 or 70 mean none */
 			}	/* no port */
 		    }		/* host ok */
 		}		/* selector ok */
@@ -444,10 +444,7 @@
 
 		    if (gtype == GOPHER_HTML) {
 			valid_chars = acceptable_html;
-			HTSprintf0(&address, "//%s:%s/%c",
-				   host,
-				   isEmpty(port) ? "80" : port,
-				   this_type);
+			HTSprintf0(&address, "//%s%s/%c/", host, port, this_type);
 			if (*selector == '/')
 			    ++selector;
 		    } else {