diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
index c1d5fa3c08b014c6c4b74b4f22817801b9057741..0e6f950f5d7edd170e331c696d52274bf1e43c66 100644
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -4630,7 +4630,7 @@ package body Exp_Ch6 is
             --  It may be possible that we are re-expanding an already
             --  expanded call when are are dealing with dispatching ???
 
-            if not Present (Parameter_Associations (Call_Node))
+            if No (Parameter_Associations (Call_Node))
               or else Nkind (Last (Parameter_Associations (Call_Node)))
                         /= N_Parameter_Association
               or else not Is_Accessibility_Actual
diff --git a/gcc/ada/exp_disp.adb b/gcc/ada/exp_disp.adb
index 9e0c87a50951d5c58b4ba1a83e0a875e8445f9b9..89b47c042a0e93aecd1121a333302aee25ce4542 100644
--- a/gcc/ada/exp_disp.adb
+++ b/gcc/ada/exp_disp.adb
@@ -537,7 +537,7 @@ package body Exp_Disp is
             then
                Target_List := Priv_Decls;
 
-            elsif not Present (Vis_Decls) then
+            elsif No (Vis_Decls) then
                Target_List := New_List;
                Set_Private_Declarations (Spec, Target_List);
             else
diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index c46994362687108e3c9dba7c2f8a119c9b81cea4..ae97da58da395d50f1f7518f96b3f31d4ea9f99e 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -16400,7 +16400,7 @@ package body Sem_Ch13 is
       if Nkind (N) = N_Aggregate then
          if Present (Component_Associations (N))
             or else Null_Record_Present (N)
-            or else not Present (Expressions (N))
+            or else No (Expressions (N))
          then
             Error_Msg_N ("bad Stable_Properties aspect specification", N);
             return;
diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb
index c1113e4fc42100cde4d7b815d9332c54094f65ab..8583ac052618f6f6e1aa8610ed34e54aca24d87a 100644
--- a/gcc/ada/sem_ch3.adb
+++ b/gcc/ada/sem_ch3.adb
@@ -7394,7 +7394,7 @@ package body Sem_Ch3 is
       Set_Is_Constrained
         (Derived_Type,
          (Is_Constrained (Parent_Type) or else Constraint_Present)
-           and then not Present (Discriminant_Specifications (N)));
+           and then No (Discriminant_Specifications (N)));
 
       if Constraint_Present then
          if not Has_Discriminants (Parent_Type) then