diff --git a/main.cpp b/main.cpp
index 28577f98..894b289a 100644
--- a/main.cpp
+++ b/main.cpp
@@ -17,9 +17,12 @@ int main(int argc, char *argv[]) {
 	//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();
+	bool ok = spi.open();
+	piCout << "open" << ok;
+	int r = spi.write(PIByteArray::fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
+	piCout << "write" << r;
+	r = spi.readForTime(10).toHex();
+	piCout << "read" << r;
 	return 0;
 }