diff.diff

diff --git a/src/core/Seq.pm b/src/core/Seq.pm
index a7a3c89..1bd8431 100644
--- a/src/core/Seq.pm
+++ b/src/core/Seq.pm
@@ -231,8 +231,24 @@ my class Seq is Cool does Iterable does PositionalBindFailover {
         Seq.new(Rakudo::Iterator.CStyleLoop(&body, &cond, &afterwards))
     }
 
-    multi method skip()         { nqp::stmts( $!iter.skip-one, self) }
-    multi method skip(Int() $n) { nqp::stmts( $!iter.skip-at-least($n), self) }
+    multi method skip() {
+        nqp::if(
+          $!iter.DEFINITE,
+          nqp::stmts($!iter.skip-one,self),
+          nqp::if(
+            $!list.DEFINITE,
+            nqp::stmts($!list.iterator.skip-one,self),
+            X::Seq::Consumed.new.throw))
+    }
+    multi method skip(Int() $n) {
+      nqp::if(
+        $!iter.DEFINITE,
+        nqp::stmts($!iter.skip-at-least($n),self),
+        nqp::if(
+          $!list.DEFINITE,
+          nqp::stmts($!list.iterator.skip-at-least($n),self),
+          X::Seq::Consumed.new.throw))
+    }
 }
 
 sub GATHER(&block) {