diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index e1342f48754..c01d358e71e 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,8 @@
+2019-08-19  Bob Duff  <duff@adacore.com>
+
+	* errout.ads (Size_Too_Small_Message): New constant.
+	* errout.adb, freeze.adb, sem_ch13.adb: Use it.
+
 2019-08-19  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* exp_dist.adb (Build_Package_Stubs): Do not specifically visit
diff --git a/gcc/ada/errout.adb b/gcc/ada/errout.adb
index ea524f33ee3..f5a4925eabc 100644
--- a/gcc/ada/errout.adb
+++ b/gcc/ada/errout.adb
@@ -3259,7 +3259,7 @@ package body Errout is
 
       --  Processing for "Size too small" messages
 
-      elsif Msg = "size for& too small, minimum allowed is ^" then
+      elsif Msg = Size_Too_Small_Message then
 
          --  Suppress "size too small" errors in CodePeer mode, since code may
          --  be analyzed in a different configuration than the one used for
diff --git a/gcc/ada/errout.ads b/gcc/ada/errout.ads
index 10a43b1b7b6..9a54c7c68b6 100644
--- a/gcc/ada/errout.ads
+++ b/gcc/ada/errout.ads
@@ -948,4 +948,10 @@ package Errout is
    --  This name is the identifier name as passed, cased according to the
    --  default identifier casing for the given file.
 
+   Size_Too_Small_Message : constant String :=
+     "size for& too small, minimum allowed is ^";
+   --  This message is explicitly tested in Special_Msg_Delete in the package
+   --  body, which is somewhat questionable, but at least by using a constant
+   --  we are obeying the DRY principle.
+
 end Errout;
diff --git a/gcc/ada/freeze.adb b/gcc/ada/freeze.adb
index 78d1ed46fef..70f4b9dc0f5 100644
--- a/gcc/ada/freeze.adb
+++ b/gcc/ada/freeze.adb
@@ -786,9 +786,7 @@ package body Freeze is
          elsif Has_Size_Clause (T) then
             if RM_Size (T) < S then
                Error_Msg_Uint_1 := S;
-               Error_Msg_NE
-                 ("size for& too small, minimum allowed is ^",
-                  Size_Clause (T), T);
+               Error_Msg_NE (Size_Too_Small_Message, Size_Clause (T), T);
             end if;
 
          --  Set size if not set already
diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index 35a295c8cf3..92e308ae0d9 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -10835,7 +10835,7 @@ package body Sem_Ch13 is
 
          if not ASIS_Mode then
             Error_Msg_Uint_1 := Min_Siz;
-            Error_Msg_NE ("size for& too small, minimum allowed is ^", N, T);
+            Error_Msg_NE (Size_Too_Small_Message, N, T);
          end if;
       end Size_Too_Small_Error;