diff --git a/java/GmSSL.c b/java/GmSSL.c
index 50af81e3..93d8f64a 100755
--- a/java/GmSSL.c
+++ b/java/GmSSL.c
@@ -570,7 +570,7 @@ end:
 
 }
 
-JNIEXPORT jbyteArray JNICALL Java_GmSSL_PrivateKeyDecrypt(
+JNIEXPORT jbyteArray JNICALL Java_GmSSL_privateKeyDecrypt(
 	JNIEnv *env, jobject this, jstring algor, jint flag,
 	jbyteArray in, jbyteArray key)
 {