diff --git a/platformio.ini b/platformio.ini
index 716f93b..3eb6b99 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -23,6 +23,8 @@ build_flags =
     -DEN_INCLUDE_ZEPHYR_DEPS=1
     -DEN_INIT_MBEDTLS_ENTROPY=0
     -DCOVID_MEASURE_PERFORMANCE=0   # Used to measure device performance
+    -DCONFIG_NORDIC_QSPI_NOR=y # configuration options for MX25R64 flash device
+    -DCONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
 lib_deps =
     prathje/exposure-notification @ ^0.1
 lib_ignore =
diff --git a/zephyr/prj.conf b/zephyr/prj.conf
index cb36e35..41873eb 100644
--- a/zephyr/prj.conf
+++ b/zephyr/prj.conf
@@ -32,9 +32,5 @@ CONFIG_MAIN_STACK_SIZE=2048
 CONFIG_DEBUG=y
 CONFIG_LOG=y
 
-# Need this when storage is on MX25R64
-CONFIG_NORDIC_QSPI_NOR=y
-CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
-
 CONFIG_NEWLIB_LIBC=y
 CONFIG_HEAP_MEM_POOL_SIZE=1024
\ No newline at end of file