diff --git a/src/security/v1/sec-tpm-osx.cpp b/src/security/v1/sec-tpm-osx.cpp
index f3c3029..f43faa9 100644
--- a/src/security/v1/sec-tpm-osx.cpp
+++ b/src/security/v1/sec-tpm-osx.cpp
@@ -403,8 +403,8 @@
     }
 
     case KeyType::EC: {
-      const EcdsaKeyParams& ecdsaParams = static_cast<const EcdsaKeyParams&>(params);
-      keySize = ecdsaParams.getKeySize();
+      const EcKeyParams& ecParams = static_cast<const EcKeyParams&>(params);
+      keySize = ecParams.getKeySize();
       break;
     }