diff --git a/libs/main/io_devices/piiobytearray.cpp b/libs/main/io_devices/piiobytearray.cpp
index 3b6e8374..699bd1e9 100644
--- a/libs/main/io_devices/piiobytearray.cpp
+++ b/libs/main/io_devices/piiobytearray.cpp
@@ -62,8 +62,7 @@ ssize_t PIIOByteArray::readDevice(void * read_to, ssize_t size) {
 	if (ret <= 0) return -1;
 	memcpy(read_to, data_->data(pos), ret);
 	// piCout << "readed" << ret;
-	pos += size;
-	if (pos > data_->size_s()) pos = data_->size_s();
+	pos += ret;
 	return ret;
 }