diff --git a/src/ffx/ffx.py b/src/ffx/ffx.py
index 51e7f53..de1b3cb 100755
--- a/src/ffx/ffx.py
+++ b/src/ffx/ffx.py
@@ -757,13 +757,11 @@ def convert(ctx,
             for filterYield in chainIteration:
                 targetFilenameTokens += filterYield['suffices']
 
-            if sourceFilename == targetFilename:
-                targetFilenameTokens += ['ffx']
-
-
-
             targetFilename = f"{'_'.join(targetFilenameTokens)}.{sourceFilenameExtension if rename_only else targetExtension}"
 
+            if sourceFilename == targetFilename:
+                targetFilename = f"out_{targetFilename}"
+
 
             targetPath = os.path.join(output_directory, targetFilename) if output_directory else targetFilename