diff --git a/src/testflockfev.bzz b/src/testflockfev.bzz
index dd2ea87..3142628 100644
--- a/src/testflockfev.bzz
+++ b/src/testflockfev.bzz
@@ -16,8 +16,8 @@ TARGET_ALTITUDE = 5.0
 CURSTATE = "TURNEDOFF"
  
 # Lennard-Jones parameters
-TARGET     = 10.0	#0.000001001
-EPSILON    = 15.0	#0.001
+TARGET     = 7.0	#0.000001001
+EPSILON    = 18.0	#0.001
  
 # Lennard-Jones interaction magnitude
 function lj_magnitude(dist, target, epsilon) {