diff --git a/Code/ApplicationEngine/otbWrapperParameterKey.h b/Code/ApplicationEngine/otbWrapperParameterKey.h
index 685073abe4fb05e279c5728488114bd6895144a0..2df2d219568bc60659eb36c2cd75f5c991a94850 100644
--- a/Code/ApplicationEngine/otbWrapperParameterKey.h
+++ b/Code/ApplicationEngine/otbWrapperParameterKey.h
@@ -99,7 +99,7 @@ last() : return "tata"
         }
       else
         {
-          itkGenericExceptionMacro( "Invalid key "<<val<<". Must be in minuscule, containing alphanumerical caracters or \".\"");
+          itkGenericExceptionMacro( "Invalid key "<<val<<". Must be in lowercase, containing alphanumerical characters or \".\"");
         }
     }