diff --git a/tests/drivers/build_all/adc/prj.conf b/tests/drivers/build_all/adc/prj.conf
index afb4cf20d79..c5d1cb3b04f 100644
--- a/tests/drivers/build_all/adc/prj.conf
+++ b/tests/drivers/build_all/adc/prj.conf
@@ -3,3 +3,4 @@ CONFIG_TEST_USERSPACE=y
 CONFIG_ADC=y
 CONFIG_MAX_THREAD_BYTES=4
 CONFIG_ADC_INIT_PRIORITY=80
+CONFIG_KOBJECT_RODATA_AREA_EXTRA_BYTES=256