diff --git a/version.h.in b/version.h.in

index cf429f2..da0ad15 100644

--- a/version.h.in

+++ b/version.h.in

@@ -45,12 +45,6 @@ extern "C" {

 #define NETTLE_USE_MINI_GMP @NETTLE_USE_MINI_GMP@

-/* We need a preprocessor constant for GMP_NUMB_BITS, simply using

-   sizeof(mp_limb_t) * CHAR_BIT is not good enough. */

-#if NETTLE_USE_MINI_GMP

-# define GMP_NUMB_BITS @GMP_NUMB_BITS@

-#endif

-

 int

 nettle_version_major (void);