diff --git a/Applications/Classification/otbTrainRandomForests.cxx b/Applications/Classification/otbTrainRandomForests.cxx
index cbbff6463a7b5bccee10501a688c2ed972aceba7..e0cd798d75fcc7e3a867264f339a922f7d2fd15a 100644
--- a/Applications/Classification/otbTrainRandomForests.cxx
+++ b/Applications/Classification/otbTrainRandomForests.cxx
@@ -40,7 +40,7 @@ void TrainImagesClassifier::InitRandomForestsParams()
   SetParameterInt("classifier.rf.min", 5);
   SetParameterDescription(
       "classifier.rf.min", "If the number of samples in a node is smaller than this parameter, "
-      "then the node will not be split. A reasonable value is a small percentage of the total data e.g. 1\%.");
+      "then the node will not be split. A reasonable value is a small percentage of the total data e.g. 1 percent.");
 
   //RegressionAccuracy
   AddParameter(ParameterType_Float, "classifier.rf.ra", "Termination Criteria for regression tree");
diff --git a/Applications/Radiometry/otbOpticalCalibration.cxx b/Applications/Radiometry/otbOpticalCalibration.cxx
index a785d9a78102a90829efad245e2e10e2df724b1a..a8c585eb90a16a59dfa9a4549bb4fd28e91f3238 100644
--- a/Applications/Radiometry/otbOpticalCalibration.cxx
+++ b/Applications/Radiometry/otbOpticalCalibration.cxx
@@ -127,8 +127,8 @@ private:
     DisableParameter("milli");
     MandatoryOff("milli");
 
-    AddParameter(ParameterType_Empty, "clamp", "Clamp of reflectivity values between [0% , 100%]");
-    SetParameterDescription("clamp", "Clamping in the range [0% , 100%]. It can be usefull to preserve area with specular reflectance.");
+    AddParameter(ParameterType_Empty, "clamp", "Clamp of reflectivity values between [0, 100]");
+    SetParameterDescription("clamp", "Clamping in the range [0, 100]. It can be useful to preserve area with specular reflectance.");
     EnableParameter("clamp");
     MandatoryOff("clamp");
 
@@ -350,7 +350,7 @@ private:
         }
       else
         {
-        GetLogger()->Info("Clamp values between [0%,100%]");
+        GetLogger()->Info("Clamp values between [0, 100]");
         m_ClampFilter->SetInput(m_ReflectanceToSurfaceReflectanceFilter->GetOutput());
         m_ClampFilter->ClampOutside(0.0, 1.0);
         m_ScaleFilter->SetInput(m_ClampFilter->GetOutput());
diff --git a/Applications/Utils/otbConvert.cxx b/Applications/Utils/otbConvert.cxx
index e4b083236ca0ae11bb6766b255bbb22fd9f2762b..b7e21f08843a35f443b9c2f5c5a841d3ed8d853d 100644
--- a/Applications/Utils/otbConvert.cxx
+++ b/Applications/Utils/otbConvert.cxx
@@ -110,13 +110,13 @@ private:
     SetParameterDescription("hcp","Parameters to cut the histogram edges before rescaling");
 
     AddParameter(ParameterType_Float, "hcp.high", "High Cut Quantile");
-    SetParameterDescription("hcp.high", "Quantiles to cut from histogram high values before computing min/max rescaling (in percent, 2% by default)");
+    SetParameterDescription("hcp.high", "Quantiles to cut from histogram high values before computing min/max rescaling (in percent, 2 by default)");
     MandatoryOff("hcp.high");
     SetDefaultParameterFloat("hcp.high", 2.0);
     DisableParameter("hcp.high");
 
     AddParameter(ParameterType_Float, "hcp.low", "Low Cut Quantile");
-    SetParameterDescription("hcp.low", "Quantiles to cut from histogram low values before computing min/max rescaling (in percent, 2% by default)");
+    SetParameterDescription("hcp.low", "Quantiles to cut from histogram low values before computing min/max rescaling (in percent, 2 by default)");
     MandatoryOff("hcp.low");
     SetDefaultParameterFloat("hcp.low", 2.0);
     DisableParameter("hcp.low");