diff --git a/main.c b/main.c
index a606d54c..8fe22e65 100644
--- a/main.c
+++ b/main.c
@@ -757,7 +757,7 @@ int main(int argc, char * argv[]) {
 	      	newGpsTime = millis();  
       }
 
-    if (sim_mode && (failureMode != FAIL_PAYLOAD)) {	   
+    if (sim_mode && (failureMode != FAIL_PAYLOAD) && !payload) {	   
 		if (atmosphere == 0) {
 			sensor[PRES] = 0;
 			strcpy(sensor_string[PRES], "0.0");