diff --git a/spl/std.spl b/spl/std.spl
index 9b1befe..3b516a5 100644
--- a/spl/std.spl
+++ b/spl/std.spl
@@ -648,7 +648,7 @@ func times { | with amount callable ;
 }
 
 func check-match { bool | with input output ;
-    output gettype "func" eq if {
+    output gettype "func" eq input null eq not and if {
         1 2 stop
     }
     input output eq if {
@@ -686,7 +686,7 @@ func match-unchecked { | with input output ;
 }
 
 func match { bool | with input output ;
-    output gettype "func" eq if {
+    output gettype "func" eq input null eq not and if {
         input output call
         1 2 stop
     }