diff --git a/Tools/autotest/jsbsim/runsim.py b/Tools/autotest/jsbsim/runsim.py
index f6ff225537..40ada9805c 100755
--- a/Tools/autotest/jsbsim/runsim.py
+++ b/Tools/autotest/jsbsim/runsim.py
@@ -5,7 +5,7 @@ import sys, os, pexpect, fdpexpect, socket
 import math, time, select, struct, signal, errno
 
 sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), '..', 'pysim'))
-sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), '..', '..', '..', '..', '..', 'mavlink', 'pymavlink'))
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), '..', '..', '..', '..', 'mavlink', 'pymavlink'))
 
 import util, fgFDM, atexit