diff --git a/zug/sequence.hpp b/zug/sequence.hpp
index d7ac093..bffb771 100644
--- a/zug/sequence.hpp
+++ b/zug/sequence.hpp
@@ -76,8 +76,9 @@ struct sequence_data
 
     sequence_data& operator=(sequence_data&& other)
     {
-        impl_ = std::move(other.impl);
+        impl_ = std::move(other.impl_);
         impl_.reductor.current(this);
+        return *this;
     }
 
     sequence_data& operator=(const sequence_data& other)