diff --git a/signalgen.py b/signalgen.py
index a4320de..cb3e2de 100755
--- a/signalgen.py
+++ b/signalgen.py
@@ -277,6 +277,6 @@ if __name__ == "__main__":
 		logging.info(f"Looking for filenames in file {values.listfile}")
 		processList(values)
 	elif values.fileDir is not None: #directory
-		filePaths = [f for f in listdir(values.fileDir) if f.endswith(".fil")]
+		filePaths = [f"{values.fileDir}{f}" for f in listdir(values.fileDir) if f.endswith(".fil")]
 		logging.info(f"Found {len(filePaths)} files.")
 		processDir(values, filePaths)