diff --git a/Doc/INPUT_CP b/Doc/INPUT_CP
index 38056b854..104bf248d 100644
--- a/Doc/INPUT_CP
+++ b/Doc/INPUT_CP
@@ -396,7 +396,7 @@ ortho_para     INTEGER ( default = 0 )
                lambda matrixes and for parallel diagonalization.
                With the default value ( 0 ) the code try to use the number 
                of processors, that gives the best performance
-
+               OBSOLESCENT: use command-line option " -northo XX" instead
 
 electron_damping 
                REAL ( default = 0.1D0 )
diff --git a/Doc/INPUT_PW.def b/Doc/INPUT_PW.def
index 6d5043436..96a314244 100644
--- a/Doc/INPUT_PW.def
+++ b/Doc/INPUT_PW.def
@@ -1079,6 +1079,8 @@ input_description -distribution {Quantum Espresso} -package PWscf -program pw.x
 		so the actual number of processors used will be the largest
 		square number less or equal to ortho_para (if set) or to the 
 		total number of processors (if ortho_para is not set).
+                OBSOLESCENT: use command-line option " -ndiag XX" instead 
+
 	    }
 	}