diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index e84a0f2..c37bacf 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -662,12 +662,14 @@ set(
 )
 
 if(UNIX)
+	set(CRYPTO_SRC ${CRYPTO_SRC} crypto_lock.c)
 	set(CRYPTO_SRC ${CRYPTO_SRC} bio/b_posix.c)
 	set(CRYPTO_SRC ${CRYPTO_SRC} bio/bss_log.c)
 	set(CRYPTO_SRC ${CRYPTO_SRC} ui/ui_openssl.c)
 endif()
 
 if(WIN32)
+	set(CRYPTO_SRC ${CRYPTO_SRC} crypto_lock_win.c)
 	set(CRYPTO_SRC ${CRYPTO_SRC} bio/b_win.c)
 	set(CRYPTO_UNEXPORT ${CRYPTO_UNEXPORT} BIO_s_log)
 	set(CRYPTO_SRC ${CRYPTO_SRC} ui/ui_openssl_win.c)