1 files changed, 4 insertions, 1 deletions
diff --git a/src/_cffi_src/openssl/callbacks.py b/src/_cffi_src/openssl/callbacks.py
index 13c4e10c..75c62016 100644
--- a/src/_cffi_src/openssl/callbacks.py
+++ b/src/_cffi_src/openssl/callbacks.py
@@ -47,6 +47,7 @@ CUSTOMIZATIONS = """
    using CPython APIs by Armin Rigo of the PyPy project.
 */
 
+#if CRYPTOGRAPHY_OPENSSL_LESS_THAN_110
 #ifdef _WIN32
 typedef CRITICAL_SECTION Cryptography_mutex;
 static __inline void cryptography_mutex_init(Cryptography_mutex *mutex) {
@@ -80,7 +81,6 @@ static inline void cryptography_mutex_unlock(Cryptography_mutex *mutex) {
 #endif
 
 
-
 static unsigned int _ssl_locks_count = 0;
 static Cryptography_mutex *_ssl_locks = NULL;
 
@@ -135,6 +135,9 @@ int Cryptography_setup_ssl_threads(void) {
     }
     return 1;
 }
+#else
+int (*Cryptography_setup_ssl_threads)(void) = NULL;
+#endif
 
 typedef struct {
     char *password;