diff --git a/src/cplex/printing.rs b/src/cplex/printing.rs
index 3a9f744..505fa32 100644
--- a/src/cplex/printing.rs
+++ b/src/cplex/printing.rs
@@ -125,7 +125,7 @@ pub fn proc_tup_num<T>(num: (T, T), args: Cli)
         println!("({}, {}) (({:#x}, {:#x})", num.0, num.1, num.0, num.1);
     }
     else {
-        println!("result is ({}, {}) (({:#x}, {:#x})", num.0, num.1, num.0, num.1);
+        println!("result is ({}, {}) (({:#x}, {:#x}))", num.0, num.1, num.0, num.1);
     }
 }