diff --git a/bopher-ng.sh b/bopher-ng.sh
index 24c9991..7c1c67e 100755
--- a/bopher-ng.sh
+++ b/bopher-ng.sh
@@ -66,14 +66,14 @@ trap clear_term INT
 
 # fetch any Gopher resource
 gophetch() { # args: host, port, selector[, input]
-  exec 3<>/dev/tcp/$1/$2   # bind the descriptor 3 to a /dev/tcp pseudo-device
+  exec 4<>/dev/tcp/$1/$2   # bind the descriptor 3 to a /dev/tcp pseudo-device
   if [[ -z "$4" ]]; then
-    printf '%s\r\n' "$3" >&3 # send the selector string (printf is more reliable)
+    printf '%s\r\n' "$3" >&4 # send the selector string (printf is more reliable)
   else
-    printf '%s\t%s\r\n' "$3" "$4" >&3 # send the selector + tab + input string
+    printf '%s\t%s\r\n' "$3" "$4" >&4 # send the selector + tab + input string
   fi
-  cat <&3                  # fetch and output the result (we have to use cat as the result may be binary)
-  exec 3<&-                # close the descriptor to make it reusable
+  cat <&4                  # fetch and output the result (we have to use cat as the result may be binary)
+  exec 4<&-                # close the descriptor to make it reusable
 }
 
 # parse a single Gophermap line according to the current host and port