diff --git a/ste.c b/ste.c
index ca967ed..92ff6f6 100644
--- a/ste.c
+++ b/ste.c
@@ -180,6 +180,7 @@ int main (int argc, char *argv[])
 				break;
 
 			default:
+				if (iscntrl(c)) break;
 				if (c == KEY_STAB) c = '\t';
 				rowAddChar(&rows.rw[t.cur.y], c, t.cur.x);
 				t.cur.x++;