diff --git a/owlps-positioner/cfg/owlps-positioner.conf b/owlps-positioner/cfg/owlps-positioner.conf
index f1d665c..cab383c 100644
--- a/owlps-positioner/cfg/owlps-positioner.conf
+++ b/owlps-positioner/cfg/owlps-positioner.conf
@@ -87,7 +87,7 @@ csv-file = /tmp/owlps-positioner.log
 # Since MinMax is currently the only trilateration method implemented
 # in OwlPS, you should define these parameters if you use any of the
 # trilateration-based algorithms (InterlinkNetworks, FBCM, FRBHM).
-# With the autocalibration, the Z coordinate is the level's number, not
+# With the autocalibration, the Z coordinate is the floor number, not
 # a true coordinate in meters.
 # They are declared as strings (X;Y;Z). Do not quote!
 #area-start = -2;-2;0
@@ -134,7 +134,7 @@ csv-file = /tmp/owlps-positioner.log
 # and Y axis.
 #generated-meshing-grain-x = 0.5
 #generated-meshing-grain-y = 0.5
-# The Z option is currently a level number instead of a vertical
+# The Z option is currently a floor number instead of a vertical
 # coordinate in meters.
 #generated-meshing-grain-z = 1
 
diff --git a/owlps-positioner/src/userinterface.cc b/owlps-positioner/src/userinterface.cc
index 0ee67d7..0454433 100644
--- a/owlps-positioner/src/userinterface.cc
+++ b/owlps-positioner/src/userinterface.cc
@@ -262,8 +262,8 @@ void UserInterface::fill_positioning_options()
   ("positioning.generated-meshing-grain-z",
    po::value<float>()->default_value(DEFAULT_Z_MESHING_GRAIN),
    "When generating reference points, this parameter represents the"
-   " number of the level. Currently, each increment of Y is a new"
-   " level (full 3-D coordinates are not supported yet).")
+   " number of the floor. Currently, each increment of Y is a new"
+   " floor (full 3-D coordinates are not supported yet).")
   ("positioning.accept-new-calibration-requests",
    po::value<bool>()->default_value(false),
    "Add the calibration requests received during the run-time to"