diff --git a/src/ctlike/ctlike.par b/src/ctlike/ctlike.par
index e9f5d79..cdaf144 100644
--- a/src/ctlike/ctlike.par
+++ b/src/ctlike/ctlike.par
@@ -17,13 +17,13 @@
 #
 # General parameters
 #===================
-infile, f, a, "events.fits",,,"Event list, counts map or observation definition file"
-stat,   s, h, "POISSON",,,            "Optimization statistics"
-refit,  b, h,        no,,,            "Do refitting?"
-caldb,  s, a,         "",,,           "Calibration database"
-irf,    s, a, "cta_dummy_irf",,,      "Instrument response function"
-srcmdl, f, a, "test/data/crab.xml",,, "Source model"
-outmdl, f, a, "crab_results.xml",,,   "Source model output file"
+infile, f, a, "events.fits",,, "Event list, counts map or observation definition file"
+stat,   s, h, "POISSON",,, "Optimization statistics"
+refit,  b, h, no,,, "Do refitting?"
+caldb,  s, a, "dummy",,, "Calibration database"
+irf,    s, a, "cta_dummy_irf",,, "Instrument response function"
+srcmdl, f, a, "$CTOOLS/share/models/crab.xml",,, "Source model"
+outmdl, f, a, "crab_results.xml",,,  "Source model output file"
 #
 # Standard parameters
 #====================