diff --git a/src/crypto/crypto_openssl.c b/src/crypto/crypto_openssl.c
index 7c3600234..ee20b37f0 100644
--- a/src/crypto/crypto_openssl.c
+++ b/src/crypto/crypto_openssl.c
@@ -47,6 +47,7 @@ static HMAC_CTX * HMAC_CTX_new(void)
 
 static void HMAC_CTX_free(HMAC_CTX *ctx)
 {
+	HMAC_CTX_cleanup(ctx);
 	bin_clear_free(ctx, sizeof(*ctx));
 }