diff --git a/crypto/bio/bio_sock.c b/crypto/bio/bio_sock.c
index 5b793b9af1..44e8f622ae 100644
--- a/crypto/bio/bio_sock.c
+++ b/crypto/bio/bio_sock.c
@@ -437,7 +437,7 @@ int BIO_socket_wait(int fd, int for_read, time_t max_time)
     time_t now;
 
 #ifdef _WIN32
-    if ((SOCKET)fd == INVALID_SOCKET)
+    if (fd == INVALID_SOCKET)
 #else
     if (fd < 0 || fd >= FD_SETSIZE)
 #endif