diff --git a/src/defines.h b/src/defines.h
index 122ac25..4641be7 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -29,6 +29,7 @@ typedef void*               dev_spec; // Device connection specification
 #define INVALID_DEVICE_INFO 0
 #define MAX_FRAME_LEN       264
 #define DEVICE_NAME_LENGTH  256
+#define MAX_DEVICES         16
 
 // Useful macros
 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
diff --git a/src/dev_acr122.c b/src/dev_acr122.c
index 80b8363..22b6eb1 100644
--- a/src/dev_acr122.c
+++ b/src/dev_acr122.c
@@ -43,7 +43,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define ACR122_WRAP_LEN 5
 #define ACR122_COMMAND_LEN 266
 #define ACR122_RESPONSE_LEN 268
-#define MAX_READERS 16
 
 typedef struct {
   SCARDCONTEXT hCtx;
@@ -61,8 +60,8 @@ static byte abtLed[9] = { 0xFF,0x00,0x40,0x05,0x04,0x00,0x00,0x00,0x00 };
 
 dev_info* dev_acr122_connect(const uint32_t uiIndex)
 {
-  char* pacReaders[MAX_READERS];
-  char acList[256+64*MAX_READERS];
+  char* pacReaders[MAX_DEVICES];
+  char acList[256+64*MAX_DEVICES];
   size_t ulListLen = sizeof(acList);
   uint32_t uiPos;
   uint32_t uiReaderCount;
@@ -92,7 +91,7 @@ dev_info* dev_acr122_connect(const uint32_t uiIndex)
   for (uiPos=0; uiPos<ulListLen; uiPos++)
   {
     // Make sure don't break out of our reader array
-    if (uiReaderCount == MAX_READERS) break;
+    if (uiReaderCount == MAX_DEVICES) break;
 
     // Test if there is a next reader available
     if (acList[uiPos] == 0x00)
diff --git a/src/devices.h b/src/devices.h
index 841a8b9..0104d5a 100644
--- a/src/devices.h
+++ b/src/devices.h
@@ -25,11 +25,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "types.h"
 #include "dev_acr122.h"
 #include "dev_pn531.h"
+#include "dev_arygon.h"
 
 const static struct dev_callbacks dev_callbacks_list[] = {
 //  Driver Name        Connect                  Transceive                    Disconect
   { "ACR122",          dev_acr122_connect,      dev_acr122_transceive,        dev_acr122_disconnect       },
-  { "PN531USB",        dev_pn531_connect,       dev_pn531_transceive,         dev_pn531_disconnect        }
+  { "PN531USB",        dev_pn531_connect,       dev_pn531_transceive,         dev_pn531_disconnect        },
+  { "ARYGON",          dev_arygon_connect,      dev_arygon_transceive,        dev_arygon_disconnect       }
 };
 
 #endif // _LIBNFC_DEVICES_H_