diff --git a/win_venv/main.py b/win_venv/main.py
index 5f431b4..6b5c83a 100644
--- a/win_venv/main.py
+++ b/win_venv/main.py
@@ -23,9 +23,17 @@ def files(path):
             yield os.path.join(subdir, file)
 
 def save_input(oldpath):
-    # make timestampt the filename, so it wouln't overwrite
+    # add timestamp to the filename, so it wouln't overwrite but the user still knows which file's which
     timestamp = str(int(time.time()))
-    filename = timestamp + '.' + oldpath.split('.')[-1]
+    basename = os.path.basename(oldpath)
+    try:
+        basename.index('.')
+        basename_no_extension = basename[:basename.index('.')]
+        extension = basename[index_of_dot:]
+    except ValueError:
+        basename_no_extension = basename
+        extension = ''
+    filename = basename_no_extension + '_' + timestamp + extension
     newpath = inputFilePath + '\\' + filename
     shutil.copy(oldpath, newpath)
     return newpath