diff --git a/main.c b/main.c
index 25ae2ed0..6804af68 100644
--- a/main.c
+++ b/main.c
@@ -1566,7 +1566,7 @@ void get_tlm_fox() {
 
 	if (mode == PACSAT) 
 	{
-		telem_binary = fopen("/home/pi/CubeSatSim/tlm.bin", "wb");
+		FILE *telem_binary = fopen("/home/pi/CubeSatSim/tlm.bin", "wb");
 		if (telem_binary != NULL) {
 			int bytes_written = fwrite(b, 78, 1, telem_binary);
 			printf("Writing %d bytes to tlm.bin\n", bytes_written);