diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index e068c421..c0cce91b 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -112,10 +112,6 @@ if (OPENSSL_FOUND)
     set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_CRYPTO_LIBRARIES})
     check_function_exists(EVP_aes_128_gcm HAVE_OPENSSL_EVP_AES_GCM)
 
-    set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
-    set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_CRYPTO_LIBRARIES})
-    check_function_exists(CRYPTO_THREADID_set_callback HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK)
-
     set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
     set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_CRYPTO_LIBRARIES})
     check_function_exists(CRYPTO_ctr128_encrypt HAVE_OPENSSL_CRYPTO_CTR128_ENCRYPT)
diff --git a/config.h.cmake b/config.h.cmake
index b7a1c954..12e0b73f 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -123,9 +123,6 @@
 /* Define to 1 if you have the `EVP_chacha20' function. */
 #cmakedefine HAVE_OPENSSL_EVP_CHACHA20 1
 
-/* Define to 1 if you have the `CRYPTO_THREADID_set_callback' function. */
-#cmakedefine HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK 1
-
 /* Define to 1 if you have the `CRYPTO_ctr128_encrypt' function. */
 #cmakedefine HAVE_OPENSSL_CRYPTO_CTR128_ENCRYPT 1
 
diff --git a/src/threads/libcrypto.c b/src/threads/libcrypto.c
index 5786948b..dac840d3 100644
--- a/src/threads/libcrypto.c
+++ b/src/threads/libcrypto.c
@@ -57,14 +57,12 @@ void libcrypto_lock_callback(int mode, int i, const char *file, int line)
     }
 }
 
-#ifdef HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK
 static void libcrypto_THREADID_callback(CRYPTO_THREADID *id)
 {
     unsigned long thread_id = (*user_callbacks->thread_id)();
 
     CRYPTO_THREADID_set_numeric(id, thread_id);
 }
-#endif /* HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK */
 
 int crypto_thread_init(struct ssh_threads_callbacks_struct *cb)
 {
@@ -96,12 +94,7 @@ int crypto_thread_init(struct ssh_threads_callbacks_struct *cb)
         user_callbacks->mutex_init(&libcrypto_mutexes[i]);
     }
 
-#ifdef HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK
     CRYPTO_THREADID_set_callback(libcrypto_THREADID_callback);
-#else
-    CRYPTO_set_id_callback(user_callbacks->thread_id);
-#endif
-
     CRYPTO_set_locking_callback(libcrypto_lock_callback);
 
     return SSH_OK;
@@ -116,12 +109,7 @@ void crypto_thread_finalize(void)
         return;
     }
 
-#ifdef HAVE_OPENSSL_CRYPTO_THREADID_SET_CALLBACK
     CRYPTO_THREADID_set_callback(NULL);
-#else
-    CRYPTO_set_id_callback(NULL);
-#endif
-
     CRYPTO_set_locking_callback(NULL);
 
     for (i = 0; i < n; ++i) {