diff --git a/kitty/vt-parser.c b/kitty/vt-parser.c
index a6bc57b65..fbe18ebdb 100644
--- a/kitty/vt-parser.c
+++ b/kitty/vt-parser.c
@@ -19,7 +19,7 @@
 #define BUF_SZ (1024u*1024u)
 #define MAX_ESCAPE_CODE_LENGTH (BUF_SZ / 4)
 #define MAX_CSI_PARAMS 256
-#define MAX_CSI_DIGITS 16
+#define MAX_CSI_DIGITS (2*sizeof(uint64_t))
 #define DEFAULT_PENDING_WAIT_TIME s_double_to_monotonic_t(2.0)