diff --git a/src/lib/crypto/OSSLMLDSAPrivateKey.cpp b/src/lib/crypto/OSSLMLDSAPrivateKey.cpp
index 1c644b753..88cef2f85 100644
--- a/src/lib/crypto/OSSLMLDSAPrivateKey.cpp
+++ b/src/lib/crypto/OSSLMLDSAPrivateKey.cpp
@@ -203,7 +203,8 @@ void OSSLMLDSAPrivateKey::createOSSLKey()
 
 	*p = OSSL_PARAM_construct_end();
 
-	ctx = EVP_PKEY_CTX_new_from_name(NULL, name, NULL);
+	// Use the default provider for internal ML-DSA key reconstruction.
+	ctx = EVP_PKEY_CTX_new_from_name(NULL, name, "provider=default");
 	if (ctx == NULL) {
 		ERROR_MSG("Could not create context");
 		return;
diff --git a/src/lib/crypto/OSSLMLDSAPublicKey.cpp b/src/lib/crypto/OSSLMLDSAPublicKey.cpp
index b4b2715ff..52ef5a2ca 100644
--- a/src/lib/crypto/OSSLMLDSAPublicKey.cpp
+++ b/src/lib/crypto/OSSLMLDSAPublicKey.cpp
@@ -123,7 +123,8 @@ void OSSLMLDSAPublicKey::createOSSLKey()
 
 	*p = OSSL_PARAM_construct_end();
 
-	ctx = EVP_PKEY_CTX_new_from_name(NULL, name, NULL);
+	// Use the default provider for internal ML-DSA key reconstruction
+	ctx = EVP_PKEY_CTX_new_from_name(NULL, name, "provider=default");
 	if (ctx == NULL) {
 		ERROR_MSG("Could not create context");
 		return;