1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index d3af04e95288..3ce2a7c0bda6 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -457,7 +457,7 @@ int dialog_inputbox(WINDOW *main_window,
                                 /* insert the char at the proper position */
                                 memmove(&result[cursor_position+1],
                                                 &result[cursor_position],
-                                                len+1);
+                                                len-cursor_position+1);
                                 result[cursor_position] = res;
                                 cursor_position++;
                         } else {