diff --git a/cscripts/cssens.par b/cscripts/cssens.par
index 38f3650..14e8abd 100755
--- a/cscripts/cssens.par
+++ b/cscripts/cssens.par
@@ -41,7 +41,7 @@ type,      s, h, Differential,Differential|Integral,, "Sensitivity type"
 sigma,     r, h, 5.0,,, "Significance threshold (Gaussian sigma)"
 max_iter,  i, h, 50,,, "Maximum number of iterations"
 statistic, s, h, DEFAULT,DEFAULT|CSTAT|WSTAT|CHI2,, "Optimization statistic"
-mincounts, i, h, 0,,, "Minimum number of source counts"
+mincounts, i, h, 10,,, "Minimum number of source counts"
 bkgexcess, r, h, 0.0,,, "Background uncertainty fraction"
 bkgrad,    r, h, 0.33,,, "Background radius (deg)"
 seed,      i, h, 1,,, "Initial random number generator seed"
diff --git a/doc/source/users/reference_manual/cssens.rst b/doc/source/users/reference_manual/cssens.rst
index c6da43e..b097ddb 100755
--- a/doc/source/users/reference_manual/cssens.rst
+++ b/doc/source/users/reference_manual/cssens.rst
@@ -121,7 +121,7 @@ General parameters
     observations, and ``CHI2`` uses the Chi squared statistic for all
     binned or stacked observations.
 
-``(mincounts = 0) [integer]``
+``(mincounts = 10) [integer]``
     Constraint on the minimum number of required source counts. Conventionally,
     a constraint for a minimum number of 10 source counts is applied for CTA
     sensitivity estimates. If ``0`` is specified then no source counts limit