diff --git a/src/boards/pca10100/board.mk b/src/boards/pca10100/board.mk
index d76b2b7..a979f7e 100644
--- a/src/boards/pca10100/board.mk
+++ b/src/boards/pca10100/board.mk
@@ -1,2 +1 @@
-MCU_SUB_VARIANT = nrf52833
-SD_VERSION=7.2.0
\ No newline at end of file
+MCU_SUB_VARIANT = nrf52833
\ No newline at end of file