diff --git a/main.h b/main.h
index 46cab984..b7091101 100644
--- a/main.h
+++ b/main.h
@@ -106,7 +106,7 @@ short int buffer[2336400]; // max size for 10 frames count of BPSK
 FILE *sopen(const char *program);
 FILE *telem_file;	
 int adc_file;
-#define BUFFER_SIZE  2^16
+#define BUFFER_SIZE  2^18
 uint8_t adc_buffer[BUFFER_SIZE];
 unsigned long int wav_position = 0;