diff --git a/tests/kernel/interrupt/prj.conf b/tests/kernel/interrupt/prj.conf
index c8656e42213..c3bf4666f6a 100644
--- a/tests/kernel/interrupt/prj.conf
+++ b/tests/kernel/interrupt/prj.conf
@@ -1,3 +1,4 @@
 CONFIG_ZTEST=y
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_DYNAMIC_INTERRUPTS=y
+CONFIG_MP_NUM_CPUS=1