diff --git a/src/kaleidoscope/device/dygma/Defy_wireless.cpp b/src/kaleidoscope/device/dygma/Defy_wireless.cpp
index e8db3d4..15a578b 100644
--- a/src/kaleidoscope/device/dygma/Defy_wireless.cpp
+++ b/src/kaleidoscope/device/dygma/Defy_wireless.cpp
@@ -15,6 +15,7 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <http://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_NRF52
 
 #include "kaleidoscope/Runtime.h"
 #include <Kaleidoscope-EEPROM-Settings.h>
@@ -753,3 +754,4 @@ void DefyNrf::settings::keyscanInterval(uint16_t interval)
 } // namespace dygma
 } // namespace device
 } // namespace kaleidoscope
+#endif
\ No newline at end of file
diff --git a/src/kaleidoscope/device/dygma/Defy_wireless.h b/src/kaleidoscope/device/dygma/Defy_wireless.h
index 18764ef..0fe7d69 100644
--- a/src/kaleidoscope/device/dygma/Defy_wireless.h
+++ b/src/kaleidoscope/device/dygma/Defy_wireless.h
@@ -15,6 +15,7 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <http://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_NRF52
 
 #pragma once
 
@@ -407,3 +408,4 @@ typedef kaleidoscope::device::dygma::DefyNrf Device;
       r4c0, r4c1, r4c2, r4c3, r4c4, r4c5, r4c6, r4c7, r4c8, r4c9, r4c10, r4c11, r4c12, r4c13, r4c14, r4c15
 
 #endif  // __DEFY_WIRELESS_H__
+#endif
\ No newline at end of file
diff --git a/src/kaleidoscope/device/dygma/defy_wireless/Hand.cpp b/src/kaleidoscope/device/dygma/defy_wireless/Hand.cpp
index e351c28..3c16235 100644
--- a/src/kaleidoscope/device/dygma/defy_wireless/Hand.cpp
+++ b/src/kaleidoscope/device/dygma/defy_wireless/Hand.cpp
@@ -1,3 +1,4 @@
+#ifdef ARDUINO_ARCH_NRF52
 #include "Hand.h"
 
 #include "Defy_wireless.h"
@@ -102,3 +103,4 @@ Devices Hand::getConnectedDevice() const
 } // namespace dygma
 } // namespace device
 } // namespace kaleidoscope
+#endif
\ No newline at end of file
diff --git a/src/kaleidoscope/device/dygma/defy_wireless/Hand.h b/src/kaleidoscope/device/dygma/defy_wireless/Hand.h
index f797078..304c4ce 100644
--- a/src/kaleidoscope/device/dygma/defy_wireless/Hand.h
+++ b/src/kaleidoscope/device/dygma/defy_wireless/Hand.h
@@ -15,6 +15,7 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <http://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_NRF52
 
 #pragma once
 
@@ -85,3 +86,4 @@ class Hand {
 }  // namespace dygma
 }  // namespace device
 }  // namespace kaleidoscope
+#endif
\ No newline at end of file
diff --git a/src/kaleidoscope/device/dygma/defy_wireless/TWI.cpp b/src/kaleidoscope/device/dygma/defy_wireless/TWI.cpp
index 6820318..61f54c4 100644
--- a/src/kaleidoscope/device/dygma/defy_wireless/TWI.cpp
+++ b/src/kaleidoscope/device/dygma/defy_wireless/TWI.cpp
@@ -1,3 +1,4 @@
+#ifdef ARDUINO_ARCH_NRF52
 #include "TWI.h"
 
 #include "kaleidoscope/util/crc16.h"
@@ -275,3 +276,4 @@ void TWI::recovery(void)
 }
 }
 
+#endif
\ No newline at end of file
diff --git a/src/kaleidoscope/device/dygma/defy_wireless/TWI.h b/src/kaleidoscope/device/dygma/defy_wireless/TWI.h
index f5c5c45..c10f532 100644
--- a/src/kaleidoscope/device/dygma/defy_wireless/TWI.h
+++ b/src/kaleidoscope/device/dygma/defy_wireless/TWI.h
@@ -15,6 +15,7 @@
  * You should have received a copy of the GNU General Public License along with
  * this program. If not, see <http://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_NRF52
 
 #pragma once
 
@@ -68,3 +69,4 @@ class TWI
 }
 }
 
+#endif
\ No newline at end of file