diff --git a/tools/wasptool b/tools/wasptool
index 59f9b6f..339344e 100755
--- a/tools/wasptool
+++ b/tools/wasptool
@@ -289,6 +289,9 @@ if __name__ == '__main__':
         if not args.verbose:
             print_log(console.logfile)
         sys.exit(1)
+    if not args.verbose:
+        console.logfile.close()
+        console.logfile = None
 
     macaddr = console.match.group(1)
     console.expect('Exit console using Ctrl-X')