diff --git a/closed/src/jdk.crypto.ec/share/classes/sun/security/ec/NativeECDHKeyAgreement.java b/closed/src/jdk.crypto.ec/share/classes/sun/security/ec/NativeECDHKeyAgreement.java
index 6ff32a3b280..d21a4994bca 100644
--- a/closed/src/jdk.crypto.ec/share/classes/sun/security/ec/NativeECDHKeyAgreement.java
+++ b/closed/src/jdk.crypto.ec/share/classes/sun/security/ec/NativeECDHKeyAgreement.java
@@ -55,6 +55,7 @@
 import jdk.crypto.jniprovider.NativeCrypto;
 
 import sun.security.action.GetPropertyAction;
+import sun.security.util.ECUtil;
 import sun.security.util.NamedCurve;
 
 /**
@@ -103,6 +104,8 @@ protected void engineInit(Key key, SecureRandom random)
         this.privateKey = (ECPrivateKeyImpl) ECKeyFactory.toECKey(key);
         this.publicKey = null;
 
+        ECUtil.checkPrivateKey(this.privateKey);
+
         ECParameterSpec params = this.privateKey.getParams();
         if (params instanceof NamedCurve) {
             this.curve = ((NamedCurve) params).getNameAndAliases()[0];