diff --git a/test/lib/server.py b/test/lib/server.py
index 27154999e2a484ddf8c623bcb60189079ea578f5..ee2954ffb34a2d543215e7de3a2eba45e5868ce3 100644
--- a/test/lib/server.py
+++ b/test/lib/server.py
@@ -33,7 +33,7 @@ def prepare_gdb(args):
   if term not in ["xterm", "rxvt", "urxvt", "gnome-terminal", "konsole"]:
     raise RuntimeError("--gdb: unsupported terminal {0}".format(term))
 
-  args = [ term, "-e ", "gdb", "-ex", "break main", "-ex", "run" ] + args
+  args = [ term, "-e", "gdb", "-ex", "break main", "-ex", "run" ] + args
   return args
 
 def prepare_valgrind(args, valgrind_log):