diff --git a/src/Solver/Mage.py b/src/Solver/Mage.py
index d3e1068f..7501cb4f 100644
--- a/src/Solver/Mage.py
+++ b/src/Solver/Mage.py
@@ -177,15 +177,15 @@ class Mage(CommandLineSolver):
         return lst
 
     def input_param(self):
-        name = self._study.name
+        name = self._study.name.replace(" ", "_")
         return f"{name}.REP"
 
     def output_param(self):
-        name = self._study.name
+        name = self._study.name.replace(" ", "_")
         return f"{name}.BIN"
 
     def log_file(self):
-        name = self._study.name
+        name = self._study.name.replace(" ", "_")
         return f"{name}.TRA"
 
     def _export_REP_additional_lines(self, study, rep_file):
@@ -819,7 +819,8 @@ class Mage(CommandLineSolver):
             repertory=repertory,
             name=name,
         )
-        fname = os.path.join(repertory, f"{name}.BIN")
+
+        fname = os.path.join(repertory, f"{name}.BIN".replace(" ", "_"))
         if not os.path.isfile(fname):
             logger.info(f"Result file {name}.BIN does not exist")
             return None