diff --git a/posix-configs/SITL/init/rcS_jmavsim b/posix-configs/SITL/init/rcS_jmavsim_iris
similarity index 100%
rename from posix-configs/SITL/init/rcS_jmavsim
rename to posix-configs/SITL/init/rcS_jmavsim_iris
diff --git a/src/platforms/posix/main.cpp b/src/platforms/posix/main.cpp
index 536694d6bdd..4144b2c4ef4 100644
--- a/src/platforms/posix/main.cpp
+++ b/src/platforms/posix/main.cpp
@@ -137,6 +137,10 @@ static void usage()
 
 static void process_line(string &line, bool exit_on_fail)
 {
+	if (line.length() == 0) {
+		printf("\n");
+	} 
+
 	vector<string> appargs(8);
 
 	stringstream(line) >> appargs[0] >> appargs[1] >> appargs[2] >> appargs[3] >> appargs[4] >> appargs[5] >> appargs[6] >>