--- knot.orig/configure
+++ knot/configure
@@ -13429,23 +13429,6 @@ if test "$with_openssl" = "no"; then :
 
 fi
 
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <openssl/crypto.h>
-   #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
-   openssl_version_ok
-   #endif
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
-  $EGREP "openssl_version_ok" >/dev/null 2>&1; then :
-
-else
-  as_fn_error $? "OpenSSL library version >= 1.0.0 is required." "$LINENO" 5
-
-fi
-rm -f conftest*
-
 
 
 # Check whether --with-libidn was given.
--- knot.orig/configure.ac
+++ knot/configure.ac
@@ -283,14 +283,6 @@ AS_IF([test "$with_openssl" = "no"],[
   AC_MSG_ERROR([OpenSSL library is required.])
 ])
 
-AC_EGREP_CPP(openssl_version_ok,
-  [#include <openssl/crypto.h>
-   #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
-   openssl_version_ok
-   #endif
-  ],[],[AC_MSG_ERROR([OpenSSL library version >= 1.0.0 is required.])]
-)
-
 AC_ARG_WITH(libidn, AC_HELP_STRING([--with-libidn=[DIR]],
     [Support IDN (needs GNU Libidn)]),
     libidn=$withval, libidn=yes)