diff --git a/src/ffx/ffx.py b/src/ffx/ffx.py
index 588c749..51e7f53 100755
--- a/src/ffx/ffx.py
+++ b/src/ffx/ffx.py
@@ -757,6 +757,10 @@ 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}"