diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
index 1392972..c1194c2 100644
--- a/src/bin/psql/command.c
+++ b/src/bin/psql/command.c
@@ -90,30 +90,6 @@ HandleSlashCmds(PsqlScanState scan_state,
 	/* And try to execute it */
 	status = exec_command(cmd, scan_state, query_buf);
 
-	if (status == PSQL_CMD_UNKNOWN && strlen(cmd) > 1)
-	{
-		/*
-		 * If the command was not recognized, try to parse it as a one-letter
-		 * command with immediately following argument (a still-supported, but
-		 * no longer encouraged, syntax).
-		 */
-		char		new_cmd[2];
-
-		/* don't change cmd until we know it's okay */
-		new_cmd[0] = cmd[0];
-		new_cmd[1] = '\0';
-
-		psql_scan_slash_pushback(scan_state, cmd + 1);
-
-		status = exec_command(new_cmd, scan_state, query_buf);
-
-		if (status != PSQL_CMD_UNKNOWN)
-		{
-			/* adjust cmd for possible messages below */
-			cmd[1] = '\0';
-		}
-	}
-
 	if (status == PSQL_CMD_UNKNOWN)
 	{
 		if (pset.cur_cmd_interactive)