diff --git a/patches/customversion/addpatch.py b/patches/customversion/addpatch.py
index 307172394..1614bb895 100644
--- a/patches/customversion/addpatch.py
+++ b/patches/customversion/addpatch.py
@@ -16,7 +16,7 @@ for arg in range(2, len(sys.argv)):
     customtext += " {},".format(sys.argv[arg])
 customtext = customtext.strip(",")
 
-timestamp = str(datetime.datetime.utcnow()) + " UTC"
+timestamp = str(datetime.datetime.utcnow()).split('.')[0] + " UTC"
 
 customtext += ", built on {}@{} at {}".format(os.getlogin(),
                                               socket.gethostname(),