diff --git a/main.cpp b/main.cpp
index 8f41dc46..28577f98 100644
--- a/main.cpp
+++ b/main.cpp
@@ -13,8 +13,10 @@ int main(int argc, char *argv[]) {
 	}
 	PIString path = cli.argumentValue("dev");
 	PISPI spi(path, 1000000);
-	spi.setDebug(true);
+	piCout << "SPI" << path;
+	//spi.setDebug(true);
 	if (cli.hasArgument("speed")) spi.setSpeed(cli.argumentValue("speed").toInt());
+	piCout << "try opening..";
 	piCout << "open" << spi.open();
 	piCout << "write" << spi.write(PIByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
 	piCout << "read" << spi.readForTime(10).toHex();
diff --git a/src_main/io/pispi.cpp b/src_main/io/pispi.cpp
index 7e95ef42..e75ce18a 100644
--- a/src_main/io/pispi.cpp
+++ b/src_main/io/pispi.cpp
@@ -93,7 +93,7 @@ int PISPI::writeDevice(const void * data, int max_size) {
 		ret = ioctl(PRIVATE->fd, SPI_IOC_MESSAGE(1), &PRIVATE->spi_ioc_tr);
 		if (ret < 1) {piCoutObj << "can't send spi message" << ret; return -1;}
 		recv_buf.append(rx_buf);
-		if (recv_buf.size() > threadedReadBufferSize()) recv_buf.resize(threadedReadBufferSize());
+		if (recv_buf.size_s() > threadedReadBufferSize()) recv_buf.resize(threadedReadBufferSize());
 		return max_size;
 	}
 #endif