diff --git a/tty-term.c b/tty-term.c
index 45e7e7f8..6172941c 100644
--- a/tty-term.c
+++ b/tty-term.c
@@ -1,4 +1,4 @@
-/* $Id: tty-term.c,v 1.26 2009-08-09 15:29:54 tcunha Exp $ */
+/* $Id: tty-term.c,v 1.27 2009-08-09 15:57:13 tcunha Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -195,7 +195,8 @@ tty_term_override(struct tty_term *term, const char *overrides)
 				case TTYCODE_NONE:
 					break;
 				case TTYCODE_STRING:
-					xfree(code->value.string);
+					if (code->type == TTYCODE_STRING)
+						xfree(code->value.string);
 					code->value.string = xstrdup(val);
 					code->type = ent->type;
 					break;