diff --git a/frontend/src/main.c b/frontend/src/main.c
index 72d7313..69264c6 100644
--- a/frontend/src/main.c
+++ b/frontend/src/main.c
@@ -148,7 +148,7 @@ static int encrypt(const char* const passphrase, const CHR* const input_path, co
 	}
 
 	clock_t clk_now, clk_update = clock();
-	uint64_t crc_actual = CRC_INITIALIZER, bytes_read = sizeof(uint64_t);
+	uint64_t crc_actual = CRC_INITIALIZER, bytes_read = 0U;
 	uint8_t buffer[BUFF_SIZE];
 
 	FPRINTF(stderr, T("%5.1f%% "), 0.0);