diff --git a/armsrc/fpgaloader.h b/armsrc/fpgaloader.h
index ce2b00d2c..951260046 100644
--- a/armsrc/fpgaloader.h
+++ b/armsrc/fpgaloader.h
@@ -86,9 +86,9 @@ extern void switch_off(void);
 #define FPGA_HF_ISO14443A_READER_MOD				(4<<0)
 
 //options for Felica. 
-#define FPGA_MAJOR_MODE_ISO18092          			(5<<5)
-#define FPGA_HF_ISO18092_FLAG_NOMOD                 (1<<0) //disable modulation module
-#define FPGA_HF_ISO18092_FLAG_424K                  (2<<0) // should enable 414k mode (untested). No autodetect
-#define FPGA_HF_ISO18092_FLAG_READER	            (4<<0) // enables antenna power, to act as a reader instead of tag
+#define FPGA_MAJOR_MODE_ISO18092          			(5<<5) // 01010 0000
+#define FPGA_HF_ISO18092_FLAG_NOMOD                 (1<<0) // 0001 disable modulation module
+#define FPGA_HF_ISO18092_FLAG_424K                  (2<<0) // 0010 should enable 414k mode (untested). No autodetect
+#define FPGA_HF_ISO18092_FLAG_READER	            (4<<0) // 0100 enables antenna power, to act as a reader instead of tag
  
 #endif
\ No newline at end of file