diff --git a/src/gen_cpp_Message.ysl2 b/src/gen_cpp_Message.ysl2
index 11d767a..8670d18 100644
--- a/src/gen_cpp_Message.ysl2
+++ b/src/gen_cpp_Message.ysl2
@@ -78,7 +78,7 @@ tstylesheet {
                 return (jlong) (int64_t) (intptr_t) _msg;
             }
 
-            JNIEXPORT jbyteArray JNICALL Java_org_pEp_jniadapter_«$jname»__1decodeMIME(JNIEnv *env, jobject msg)
+            JNIEXPORT jbyteArray JNICALL Java_org_pEp_jniadapter_«$jname»__1encodeMIME(JNIEnv *env, jobject msg)
             {
                 «@name» *_obj = «@name»_ptr(env, msg);
                 char *mime_text = nullptr;
diff --git a/src/gen_java_Message.ysl2 b/src/gen_java_Message.ysl2
index cce518f..a84f9f7 100644
--- a/src/gen_java_Message.ysl2
+++ b/src/gen_java_Message.ysl2
@@ -38,10 +38,10 @@ tstylesheet {
                     handle = _«$cname»(_mime_text);
                 }
 
-                public native byte[] _decodeMIME() throws pEpException;
+                public native byte[] _encodeMIME() throws pEpException;
 
-                public String decodeMIME() {
-                    return AbstractEngine.toUTF16(_decodeMIME());
+                public String encodeMIME() {
+                    return AbstractEngine.toUTF16(_encodeMIME());
                 }
 
                 private «$cname»(long h) {