diff --git a/src/ctlike/ctlike.par b/src/ctlike/ctlike.par
index cdaf144..7a46dea 100644
--- a/src/ctlike/ctlike.par
+++ b/src/ctlike/ctlike.par
@@ -19,6 +19,7 @@
 #===================
 infile, f, a, "events.fits",,, "Event list, counts map or observation definition file"
 stat,   s, h, "POISSON",,, "Optimization statistics"
+edisp,  b, h, no,,, "Apply energy dispersion?"
 refit,  b, h, no,,, "Do refitting?"
 caldb,  s, a, "dummy",,, "Calibration database"
 irf,    s, a, "cta_dummy_irf",,, "Instrument response function"