diff --git a/menuconfig.py b/menuconfig.py
index 7e765d3..a0ab004 100755
--- a/menuconfig.py
+++ b/menuconfig.py
@@ -1757,6 +1757,9 @@ def edit_width():
             _safe_curs_set(0)
             return None
 
+        elif c == "\0":  # \0 = NUL, ignore
+            pass
+
         else:
             s, i, hscroll = _edit_text(c, s, i, hscroll, edit_width())
 
@@ -2196,6 +2199,9 @@ def select_prev_match():
         elif c == curses.KEY_HOME:
             sel_node_i = scroll = 0
 
+        elif c == "\0":  # \0 = NUL, ignore
+            pass
+
         else:
             s, s_i, hscroll = _edit_text(c, s, s_i, hscroll,
                                          _width(edit_box) - 2)