1 files changed, 1 insertions, 1 deletions
diff --git a/src/fq.hpp b/src/fq.hpp
index fa5c89d..3a8946e 100644
--- a/src/fq.hpp
+++ b/src/fq.hpp
@@ -71,7 +71,7 @@ namespace zmq
         bool terminating;
 
         fq_t (const fq_t&);
-        void operator = (const fq_t&);
+        const fq_t &operator = (const fq_t&);
     };
 
 }