diff --git a/src/client/ns_turn_msg.c b/src/client/ns_turn_msg.c
index b015f4f..db761d1 100644
--- a/src/client/ns_turn_msg.c
+++ b/src/client/ns_turn_msg.c
@@ -238,14 +238,25 @@ int stun_produce_integrity_key_str(uint8_t *uname, uint8_t *realm, uint8_t *upwd
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 		unsigned int keylen = 0;
 		EVP_MD_CTX ctx;
-		EVP_DigestInit(&ctx,EVP_md5());
+		EVP_MD_CTX_init(&ctx);
+#ifdef OPENSSL_FIPS
+		if (FIPS_mode()) {
+			EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+		}
+#endif
+		EVP_DigestInit_ex(&ctx,EVP_md5(), NULL);
 		EVP_DigestUpdate(&ctx,str,strl);
 		EVP_DigestFinal(&ctx,key,&keylen);
 		EVP_MD_CTX_cleanup(&ctx);
 #else
 		unsigned int keylen = 0;
 		EVP_MD_CTX *ctx = EVP_MD_CTX_new();
-		EVP_DigestInit(ctx,EVP_md5());
+#ifdef OPENSSL_FIPS
+		if (FIPS_mode()) {
+			EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+		}
+#endif
+		EVP_DigestInit_ex(ctx,EVP_md5(), NULL);
 		EVP_DigestUpdate(ctx,str,strl);
 		EVP_DigestFinal(ctx,key,&keylen);
 		EVP_MD_CTX_free(ctx);