diff --git a/autosub/__init__.py b/autosub/__init__.py
index 01c4bf9a..12cfdc11 100644
--- a/autosub/__init__.py
+++ b/autosub/__init__.py
@@ -71,7 +71,10 @@ def __call__(self, region):
                        "-loglevel", "error", temp.name]
             use_shell = True if os.name == "nt" else False
             subprocess.check_output(command, stdin=open(os.devnull), shell=use_shell)
-            return temp.read()
+            read_data = temp.read()
+            temp.close()
+            os.unlink(temp.name)
+            return read_data
 
         except KeyboardInterrupt:
             return None