diff --git a/ports/zephyr/prj_base.conf b/ports/zephyr/prj_base.conf
index 58206a0bc2..993dfdc26f 100644
--- a/ports/zephyr/prj_base.conf
+++ b/ports/zephyr/prj_base.conf
@@ -14,9 +14,6 @@ CONFIG_NEWLIB_LIBC=y
 CONFIG_FLOAT=y
 CONFIG_MAIN_STACK_SIZE=4736
 
-# Drivers
-CONFIG_I2C=y
-
 # Enable sensor subsystem (doesn't add code if not used).
 # Specific sensors should be enabled per-board.
 CONFIG_SENSOR=y
diff --git a/ports/zephyr/prj_frdm_k64f.conf b/ports/zephyr/prj_frdm_k64f.conf
index 477f3b8257..c2166c00df 100644
--- a/ports/zephyr/prj_frdm_k64f.conf
+++ b/ports/zephyr/prj_frdm_k64f.conf
@@ -1,6 +1,9 @@
 # Networking drivers
 CONFIG_NET_L2_ETHERNET=y
 
+# Hardware features
+CONFIG_I2C=y
+
 # Sensor drivers
 CONFIG_FXOS8700=y
 CONFIG_FXOS8700_MODE_HYBRID=y
diff --git a/ports/zephyr/prj_frdm_kw41z.conf b/ports/zephyr/prj_frdm_kw41z.conf
index 486ece2bd8..ff7b7887e1 100644
--- a/ports/zephyr/prj_frdm_kw41z.conf
+++ b/ports/zephyr/prj_frdm_kw41z.conf
@@ -1,3 +1,6 @@
+# Hardware features
+CONFIG_I2C=y
+
 # Sensor drivers
 CONFIG_FXOS8700=y
 CONFIG_FXOS8700_MODE_HYBRID=y