diff --git a/src/Model/SolverParameters/SolverParametersList.py b/src/Model/SolverParameters/SolverParametersList.py
index 4aae2b37..39c684ba 100644
--- a/src/Model/SolverParameters/SolverParametersList.py
+++ b/src/Model/SolverParameters/SolverParametersList.py
@@ -104,7 +104,7 @@ class SolverParametersList(SQLSubModel):
                 solvers = execute("SELECT DISTINCT solver FROM solver_parameter")
 
                 for solver in solvers:
-                    if solver is not "mage8":
+                    if solver != "mage8":
                         continue
 
                     data = execute("SELECT ind, name, value " +