diff --git a/src/indent.c b/src/indent.c
index 8dd4ef9..8e9b0d1 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -71,7 +71,7 @@
 	int n = atoi((char *)cp);
 
 	// Catch negative values, overflow and ridiculous big values.
-	if (n < 0 || n > 9999)
+	if (n < 0 || n > TABSTOP_MAX)
 	{
 	    semsg(_(e_invalid_argument_str), cp);
 	    vim_free(*array);
@@ -1649,7 +1649,7 @@
 	emsg(_(e_argument_must_be_positive));
 	return;
     }
-    if (new_ts < 0 || new_ts > 9999)
+    if (new_ts < 0 || new_ts > TABSTOP_MAX)
     {
 	semsg(_(e_invalid_argument_str), eap->arg);
 	return;