diff --git a/packages/arosunits/src/amigados.pas b/packages/arosunits/src/amigados.pas
index 332456a8f8..16848e7ec2 100644
--- a/packages/arosunits/src/amigados.pas
+++ b/packages/arosunits/src/amigados.pas
@@ -1917,6 +1917,9 @@ type
   elf_ptr_t             = APTR;
   elf_uintptr_t         = IPTR;
   elf_intptr_t          = SIPTR;
+  {$IFDEF CPU64}
+  {$DEFINE ELF_64BIT}
+  {$ENDIF}
   {$ENDIF}