diff --git a/wsjt.py b/wsjt.py
index 90b265c06..1fe717f28 100644
--- a/wsjt.py
+++ b/wsjt.py
@@ -2084,7 +2084,7 @@ Audio.gcom2.appdir=(appdir+'
 Audio.gcom2.ndepth=ndepth.get()
 Audio.ftn_init()
 GenStdMsgs()
-Audio.gcom4.addpfx=(options.addpfx.get().lstrip()+'    ')[:8]
+Audio.gcom4.addpfx=(options.addpfx.get().lstrip()+'        ')[:8]
 stopmon()
 first=1
 if g.Win32: root.iconbitmap("wsjt.ico")