diff --git a/geos-processing/src/geos/processing/pre_processing/TetQualityAnalysis.py b/geos-processing/src/geos/processing/pre_processing/TetQualityAnalysis.py
index baf33973..5f873ea6 100644
--- a/geos-processing/src/geos/processing/pre_processing/TetQualityAnalysis.py
+++ b/geos-processing/src/geos/processing/pre_processing/TetQualityAnalysis.py
@@ -1147,7 +1147,8 @@ def setFilename( self: Self, filename: str ) -> None:
         Args:
             filename (str): Output filename.
         """
-        self.filename = filename
+        if filename != "None":
+            self.filename = filename
 
     def __loggerSection( self: Self, sectionName: str ) -> None:
         self.logger.info( "=" * 80 )
diff --git a/geos-pv/src/geos/pv/plugins/qc/PVTetQualityAnalysis.py b/geos-pv/src/geos/pv/plugins/qc/PVTetQualityAnalysis.py
index 7955f4a2..a70b016c 100644
--- a/geos-pv/src/geos/pv/plugins/qc/PVTetQualityAnalysis.py
+++ b/geos-pv/src/geos/pv/plugins/qc/PVTetQualityAnalysis.py
@@ -107,6 +107,7 @@ def RequestData(
             tetQualityAnalysisFilter.setLoggerHandler( VTKHandler() )
 
         try:
+            tetQualityAnalysisFilter.setFilename( self._filename )
             tetQualityAnalysisFilter.applyFilter()
         except Exception as e:
             tetQualityAnalysisFilter.logger.error( f' FATAL ERROR due to:\n{e}' )