diff --git a/tutorial/ex1/README.md b/tutorial/ex1/README.md
index 1356c9120863e7c858d9e5a8916c24417e8cfb0c..f305a818ae21c270ce1954ac288078a52e31edc1 100644
--- a/tutorial/ex1/README.md
+++ b/tutorial/ex1/README.md
@@ -86,7 +86,7 @@ We want to be able to set it at runtime. To this end,
 
 ```c++
 // read the injection rate from the input file at run time
-const auto totalAreaSpecificInflow_ = GET_RUNTIME_PARAM_FROM_GROUP(TypeTag, <TYPE>, <GROUPNAME>, <PARAMNAME>);
+totalAreaSpecificInflow_ = GET_RUNTIME_PARAM_FROM_GROUP(TypeTag, <TYPE>, <GROUPNAME>, <PARAMNAME>);
 ```
 
 * Replace