diff --git a/eRINA_STM32F7/src/net/net-utils.adb b/eRINA_STM32F7/src/net/net-utils.adb
index bacdf9e..76f2fc7 100644
--- a/eRINA_STM32F7/src/net/net-utils.adb
+++ b/eRINA_STM32F7/src/net/net-utils.adb
@@ -18,14 +18,10 @@
 with Interfaces;
 package body Net.Utils is
 
-   function Hex (Value : in Uint8) return String;
    function Image (Value : in Uint8) return String;
 
    Hex_String : constant String := "0123456789ABCDEF";
 
-   --  Get a 32-bit random number.
-   function Random return Uint32 is separate;
-
    function Hex (Value : in Uint8) return String is
       use Interfaces;
 
diff --git a/eRINA_STM32F7/src/net/net-utils.ads b/eRINA_STM32F7/src/net/net-utils.ads
index 5ef2e83..45f5747 100644
--- a/eRINA_STM32F7/src/net/net-utils.ads
+++ b/eRINA_STM32F7/src/net/net-utils.ads
@@ -17,13 +17,13 @@
 -----------------------------------------------------------------------
 package Net.Utils is
 
+   pragma Preelaborate;
+
    --  Convert the IPv4 address to a dot string representation.
    function To_String (Ip : in Ip_Addr) return String;
 
    --  Convert the Ethernet address to a string representation.
    function To_String (Mac : in Ether_Addr) return String;
-
-   --  Get a 32-bit random number.
-   function Random return Uint32;
-
+   
+   function Hex (Value : in Uint8) return String;
 end Net.Utils;