diff --git a/src/mem.c b/src/mem.c
index 8de2e97c..6f429112 100644
--- a/src/mem.c
+++ b/src/mem.c
@@ -2,7 +2,9 @@
 
 #include <uv.h>
 
+#if !defined(_WIN32)
 #include <openssl/crypto.h>
+#endif
 
 #include <string.h>
 
@@ -100,6 +102,7 @@ size_t tf_mem_get_uv_malloc_size()
 	return s_uv_malloc_size;
 }
 
+#if !defined(_WIN32)
 void* _tf_tls_alloc(size_t size, const char* file, int line)
 {
 	return _tf_alloc(&s_tls_malloc_size, size);
@@ -114,10 +117,13 @@ void _tf_tls_free(void* ptr, const char* file, int line)
 {
 	_tf_free(&s_tls_malloc_size, ptr);
 }
+#endif
 
 void tf_mem_replace_tls_allocator()
 {
+#if !defined(_WIN32)
 	CRYPTO_set_mem_functions(_tf_tls_alloc, _tf_tls_realloc, _tf_tls_free);
+#endif
 }
 
 size_t tf_mem_get_tls_malloc_size()