--- a/src/jdk.crypto.mscapi/windows/native/libsunmscapi/security.cpp	Thu Jun 07 15:20:57 2018 +0200
+++ b/src/jdk.crypto.mscapi/windows/native/libsunmscapi/security.cpp	Thu Jun 07 21:57:43 2018 +0200
@@ -1319,7 +1319,7 @@
  * Signature: (Ljava/lang/String;)V
  */
 JNIEXPORT void JNICALL Java_sun_security_mscapi_KeyStore_destroyKeyContainer
-  (JNIEnv *env, jclass clazz, jstring keyContainerName)
+  (JNIEnv *env, jobject clazz, jstring keyContainerName)
 {
     HCRYPTPROV hCryptProv = NULL;
     const char* pszKeyContainerName = NULL;
@@ -1441,7 +1441,7 @@
  * Signature: (J)[B
  */
 JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getPublicKeyBlob
-    (JNIEnv *env, jclass clazz, jlong hCryptKey) {
+    (JNIEnv *env, jobject clazz, jlong hCryptKey) {
 
     jbyteArray blob = NULL;
     DWORD dwBlobLen;
@@ -1492,7 +1492,7 @@
  * Signature: ([B)[B
  */
 JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getExponent
-    (JNIEnv *env, jclass clazz, jbyteArray jKeyBlob) {
+    (JNIEnv *env, jobject clazz, jbyteArray jKeyBlob) {
 
     jbyteArray exponent = NULL;
     jbyte*     exponentBytes = NULL;
@@ -1548,7 +1548,7 @@
  * Signature: ([B)[B
  */
 JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getModulus
-    (JNIEnv *env, jclass clazz, jbyteArray jKeyBlob) {
+    (JNIEnv *env, jobject clazz, jbyteArray jKeyBlob) {
 
     jbyteArray modulus = NULL;
     jbyte*     modulusBytes = NULL;
@@ -1821,7 +1821,7 @@
  * Signature: (I[B[B[B[B[B[B[B[B)[B
  */
 JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_KeyStore_generatePrivateKeyBlob
-    (JNIEnv *env, jclass clazz,
+    (JNIEnv *env, jobject clazz,
         jint jKeyBitLength,
         jbyteArray jModulus,
         jbyteArray jPublicExponent,
@@ -1858,7 +1858,7 @@
  * Signature: ([BLjava/lang/String;I)Lsun/security/mscapi/RSAPrivateKey;
  */
 JNIEXPORT jobject JNICALL Java_sun_security_mscapi_KeyStore_storePrivateKey
-    (JNIEnv *env, jclass clazz, jbyteArray keyBlob, jstring keyContainerName,
+    (JNIEnv *env, jobject clazz, jbyteArray keyBlob, jstring keyContainerName,
      jint keySize)
 {
     HCRYPTPROV hCryptProv = NULL;