diff --git a/Modules/Applications/AppImageUtils/app/otbRescale.cxx b/Modules/Applications/AppImageUtils/app/otbRescale.cxx
index ad0992f5048a89db4af581e732dc1e44859e806c..ab7b27c23ee0ced32ff7a8ba7abe3964de0d86a5 100644
--- a/Modules/Applications/AppImageUtils/app/otbRescale.cxx
+++ b/Modules/Applications/AppImageUtils/app/otbRescale.cxx
@@ -69,8 +69,6 @@ private:
     AddParameter(ParameterType_OutputImage, "out",  "Output Image");
     SetParameterDescription( "out" , "The rescaled image filename." );
 
-    AddRAMParameter();
-
     AddParameter(ParameterType_Float,      "outmin", "Output min value");
     AddParameter(ParameterType_Float,      "outmax", "Output max value");
     SetDefaultParameterFloat("outmin", 0.0);
@@ -81,6 +79,8 @@ private:
     MandatoryOff("outmin");
     MandatoryOff("outmax");
 
+    AddRAMParameter();
+
     // Doc example parameter settings
     SetDocExampleParameterValue("in", "QB_Toulouse_Ortho_PAN.tif");
     SetDocExampleParameterValue("out", "rescaledImage.png uchar");
diff --git a/Modules/Applications/AppMathParser/app/otbBandMath.cxx b/Modules/Applications/AppMathParser/app/otbBandMath.cxx
index b738cdfa4f3646185004c2d520c4691af76570f2..fdcc05c795218158b44f82ed3d6a5d956ff44973 100644
--- a/Modules/Applications/AppMathParser/app/otbBandMath.cxx
+++ b/Modules/Applications/AppMathParser/app/otbBandMath.cxx
@@ -109,14 +109,14 @@ private:
       "Output image which is the result of the mathematical expressions on input"
       " image list operands.");
 
-    AddRAMParameter();
-
     AddParameter( ParameterType_String, "exp", "Expression");
     SetParameterDescription(
       "exp",
       "The muParser mathematical expression to apply on input images."
     );
 
+    AddRAMParameter();
+
     // Doc example parameter settings
     SetDocExampleParameterValue(
       "il",
diff --git a/Modules/Applications/AppMathParserX/app/otbBandMathX.cxx b/Modules/Applications/AppMathParserX/app/otbBandMathX.cxx
index 70f8a6874dba5fc3d11f9bbb190a7e429e7edda9..15993a3c792b3fe49df9875349741cd448dd8a02 100644
--- a/Modules/Applications/AppMathParserX/app/otbBandMathX.cxx
+++ b/Modules/Applications/AppMathParserX/app/otbBandMathX.cxx
@@ -208,8 +208,6 @@ private:
     AddParameter( ParameterType_OutputImage, "out", "Output Image" );
     SetParameterDescription( "out", "Output image." );
 
-    AddRAMParameter();
-
     AddParameter( ParameterType_String, "exp", "Expressions" );
     SetParameterDescription(
       "exp",
@@ -230,6 +228,8 @@ private:
     );
     MandatoryOff( "outcontext" );
 
+    AddRAMParameter();
+
     // Doc example parameter settings
     SetDocExampleParameterValue(
       "il",