diff --git a/spl/std.spl b/spl/std.spl
index 26d0ff8..e418249 100644
--- a/spl/std.spl
+++ b/spl/std.spl
@@ -655,7 +655,7 @@ func check-match { bool | with input output ;
         def i, n
         0 =i
         output:len =n
-        input:len n eq not if { 0 2 stop }
+        input:len n eq not if { 0 3 stop }
         1 while { i n lt } {
             input:get<i> output:get<i> check-match and
             i ++ =i
@@ -674,7 +674,7 @@ func match-unchecked { | with input output ;
         def i, n
         0 =i
         output:len =n
-        input:len n eq not if { 2 stop }
+        input:len n eq not if { 3 stop }
         while { i n lt } {
             input:get<i> output:get<i> match-unchecked
             i ++ =i
@@ -694,7 +694,7 @@ func match { bool | with input output ;
         def i, n
         0 =i
         output:len =n
-        input:len n eq not if { 0 2 stop }
+        input:len n eq not if { 0 3 stop }
         1 while { i n lt } {
             input:get<i> output:get<i> check-match and
             i ++ =i