diff --git a/main.c b/main.c
index aa57c4c4..56a998af 100644
--- a/main.c
+++ b/main.c
@@ -439,7 +439,7 @@ int main(int argc, char * argv[]) {
   memset(sensor, 0, sizeof(sensor));
   memset(other, 0, sizeof(other));	
 	
-  if ((mode == FSK) || (mode == BPSK)) 
+  if (((mode == FSK) || (mode == BPSK)) && !sim_mode)
       get_tlm_fox();	// fill transmit buffer with reset count 0 packets that will be ignored
   firstTime = 1;