diff --git a/examples/apps/ping/src/basalt-strings.adb b/examples/apps/ping/src/basalt-strings.adb
deleted file mode 100644
index 19a3f9c20..000000000
--- a/examples/apps/ping/src/basalt-strings.adb
+++ /dev/null
@@ -1,75 +0,0 @@
---
---  @summary String operations for common types
---  @author  Johannes Kliemann
---  @date    2019-11-19
---
---  Copyright (C) 2019 Componolit GmbH
---
---  This file is part of Basalt, which is distributed under the terms of the
---  GNU Affero General Public License version 3.
---
-
-package body Basalt.Strings with
-   SPARK_Mode
-is
-
-   -----------
-   -- Image --
-   -----------
-
-   function Image (V : Boolean) return String
-   is
-   begin
-      if V then
-         return "True";
-      else
-         return "False";
-      end if;
-   end Image;
-
-   -----------
-   -- Image --
-   -----------
-
-   function Image (V : Duration) return String
-   is
-      Seconds : Long_Integer;
-      Frac    : Duration;
-      V2      : Duration;
-   begin
-      V2 := V;
-      if V > 9223372036.0 then
-         V2 := 9223372036.0;
-      end if;
-      if V < -9223372036.0 then
-         V2 := -9223372036.0;
-      end if;
-      if V2 = 0.0 then
-         Seconds := 0;
-      elsif V2 < 0.0 then
-         Seconds := Long_Integer (V2 + 0.5);
-      else --  V2 > 0.0
-         Seconds := Long_Integer (V2 - 0.5);
-      end if;
-      Frac := abs (V2 - Duration (Seconds));
-      Frac := Frac * 1000000 - 0.5;
-      --  FIXME: Calls of Image with explicit default parameters
-      --  Eng/RecordFlux/Workarounds#2
-      declare
-         F_Image : constant String          := Image (Long_Integer (Frac), 10, True);
-         Pad     : constant String (1 .. 6) := (others => '0');
-         S_Image : constant String :=
-            (if Seconds = 0 then (if V2 < 0.0 then "-0" else "0") else Image (Seconds, 10, True));
-      begin
-         if Frac = -0.5 then
-            return S_Image & "." & Pad;
-         end if;
-         if F_Image'Length >= 6 then
-            return S_Image & "." & F_Image (1 .. 6);
-         else --  F_Image'Length < 6
-            return S_Image & "." & Pad (1 .. 6 - F_Image'Length) & F_Image;
-         end if;
-      end;
-   end Image;
-
-end Basalt.Strings;
diff --git a/examples/apps/ping/src/basalt-strings.ads b/examples/apps/ping/src/basalt-strings.ads
deleted file mode 100644
index 0512b794e..000000000
--- a/examples/apps/ping/src/basalt-strings.ads
+++ /dev/null
@@ -1,53 +0,0 @@
---
---  @summary String operation instances for common types
---  @author  Johannes Kliemann
---  @date    2019-11-19
---
---  Copyright (C) 2019 Componolit GmbH
---
---  This file is part of Basalt, which is distributed under the terms of the
---  GNU Affero General Public License version 3.
---
-
-with Interfaces;
-with Basalt.Strings_Generic;
-
-package Basalt.Strings with
-   SPARK_Mode,
-   Pure,
-   Annotate => (GNATprove, Terminating)
-is
-
-   --  Image instances for the most common ranged and modular types
-   function Image is new Strings_Generic.Image_Ranged (Integer);
-   function Image is new Strings_Generic.Image_Ranged (Long_Integer);
-   function Image is new Strings_Generic.Image_Modular (Standard.Interfaces.Unsigned_8);
-   function Image is new Strings_Generic.Image_Modular (Standard.Interfaces.Unsigned_16);
-   function Image is new Strings_Generic.Image_Modular (Standard.Interfaces.Unsigned_32);
-   function Image is new Strings_Generic.Image_Modular (Standard.Interfaces.Unsigned_64);
-
-   --  Image function for Boolean
-   --
-   --  @param V  Boolean value
-   --  @return   String "True" or "False"
-   function Image (V : Boolean) return String with
-      Post => Image'Result'Length <= 5 and Image'Result'First = 1;
-
-   --  Image function for Duration
-   --
-   --  @param V  Duration value
-   --  @param    Duration as string with 6 decimals
-   function Image (V : Duration) return String with
-      Post => Image'Result'Length <= 28 and Image'Result'First = 1;
-
-   package Value_U8 is new Strings_Generic.Value_Option_Modular (Interfaces.Unsigned_8);
-   package Value_U16 is new Strings_Generic.Value_Option_Modular (Interfaces.Unsigned_16);
-   package Value_U32 is new Strings_Generic.Value_Option_Modular (Interfaces.Unsigned_32);
-   package Value_U64 is new Strings_Generic.Value_Option_Modular (Interfaces.Unsigned_64);
-
-   package Value_Integer is new Strings_Generic.Value_Option_Ranged (Integer);
-   package Value_Long_Integer is new Strings_Generic.Value_Option_Ranged (Long_Integer);
-   package Value_Natural is new Strings_Generic.Value_Option_Ranged (Natural);
-   package Value_Positive is new Strings_Generic.Value_Option_Ranged (Positive);
-
-end Basalt.Strings;