diff --git a/src/binary.h b/src/binary.h
index 91f64a51..653dd9be 100644
--- a/src/binary.h
+++ b/src/binary.h
@@ -608,6 +608,8 @@ namespace etl
 
         count -= value & 0x1;
       }
+
+      return count;
   }
 
   //***************************************************************************