diff --git a/kitty/parser.c b/kitty/parser.c
index 3d42b31ae..2534663c3 100644
--- a/kitty/parser.c
+++ b/kitty/parser.c
@@ -704,7 +704,7 @@ dispatch_csi(Screen *screen, PyObject DUMP_UNUSED *dump_callback) {
     unsigned int num = screen->parser_buf_pos, start, i, num_params=0, p1, p2;
     static unsigned int params[MAX_PARAMS] = {0};
     bool private;
-    if (buf[0] == '>' || buf[0] == '<' || buf[0] == '?' || buf[0] == '!' || buf[0] == '=' || buf[0] == '-') {
+    if (buf[0] == '>' || buf[0] == '<' || buf[0] == '?' || buf[0] == '!' || buf[0] == '=') {
         start_modifier = (char)screen->parser_buf[0];
         buf++; num--;
     }