diff --git a/samples/legacy/kernel_event_logger/nanokernel/prj.conf b/samples/legacy/kernel_event_logger/nanokernel/prj.conf
index 4145a10f7839..41c2fc206ccb 100644
--- a/samples/legacy/kernel_event_logger/nanokernel/prj.conf
+++ b/samples/legacy/kernel_event_logger/nanokernel/prj.conf
@@ -9,3 +9,4 @@ CONFIG_KERNEL_EVENT_LOGGER_INTERRUPT=y
 CONFIG_KERNEL_EVENT_LOGGER_SLEEP=y
 CONFIG_IDLE_STACK_SIZE=512
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/samples/legacy/philosophers/nanokernel/prj.conf b/samples/legacy/philosophers/nanokernel/prj.conf
index 208c4101b82d..634a088dd0be 100644
--- a/samples/legacy/philosophers/nanokernel/prj.conf
+++ b/samples/legacy/philosophers/nanokernel/prj.conf
@@ -1 +1,2 @@
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/tests/kernel/mem_slab/prj.conf b/tests/kernel/mem_slab/prj.conf
index d8f773ce3c91..a3e9d1b519c4 100644
--- a/tests/kernel/mem_slab/prj.conf
+++ b/tests/kernel/mem_slab/prj.conf
@@ -1 +1,2 @@
 # nothing yet
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/benchmark/latency_measure/prj.conf b/tests/legacy/benchmark/latency_measure/prj.conf
index 532f2998cf04..3c0dcdf0dbcb 100644
--- a/tests/legacy/benchmark/latency_measure/prj.conf
+++ b/tests/legacy/benchmark/latency_measure/prj.conf
@@ -7,3 +7,6 @@ CONFIG_SYS_CLOCK_TICKS_PER_SEC=1
 # We use irq_offload(), enable it
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_LEGACY_KERNEL=y
+
+# Reduce memory/code footprint
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/kernel/test_events/prj.conf b/tests/legacy/kernel/test_events/prj.conf
index 347f255a7675..f080993ceae4 100644
--- a/tests/legacy/kernel/test_events/prj.conf
+++ b/tests/legacy/kernel/test_events/prj.conf
@@ -1,2 +1,3 @@
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/kernel/test_map/prj.conf b/tests/legacy/kernel/test_map/prj.conf
index bec90d993cb8..340ed2a2879e 100644
--- a/tests/legacy/kernel/test_map/prj.conf
+++ b/tests/legacy/kernel/test_map/prj.conf
@@ -1,2 +1,3 @@
 CONFIG_NUM_IRQS=2
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/kernel/test_map_priv/prj.conf b/tests/legacy/kernel/test_map_priv/prj.conf
index bec90d993cb8..340ed2a2879e 100644
--- a/tests/legacy/kernel/test_map_priv/prj.conf
+++ b/tests/legacy/kernel/test_map_priv/prj.conf
@@ -1,2 +1,3 @@
 CONFIG_NUM_IRQS=2
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/kernel/test_sema/microkernel/prj.conf b/tests/legacy/kernel/test_sema/microkernel/prj.conf
index 347f255a7675..f080993ceae4 100644
--- a/tests/legacy/kernel/test_sema/microkernel/prj.conf
+++ b/tests/legacy/kernel/test_sema/microkernel/prj.conf
@@ -1,2 +1,3 @@
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n
diff --git a/tests/legacy/kernel/test_sema/nanokernel/prj.conf b/tests/legacy/kernel/test_sema/nanokernel/prj.conf
index bce8d4e0e485..6838b1440154 100644
--- a/tests/legacy/kernel/test_sema/nanokernel/prj.conf
+++ b/tests/legacy/kernel/test_sema/nanokernel/prj.conf
@@ -1,3 +1,4 @@
 CONFIG_NANO_TIMEOUTS=y
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_LEGACY_KERNEL=y
+CONFIG_BLUETOOTH=n