diff --git a/tests/drivers/ipm/prj.conf b/tests/drivers/ipm/prj.conf
index 5a65323e89e4c..84d6782afeea2 100644
--- a/tests/drivers/ipm/prj.conf
+++ b/tests/drivers/ipm/prj.conf
@@ -7,3 +7,5 @@ CONFIG_IPM_CONSOLE_SENDER=y
 CONFIG_IRQ_OFFLOAD=y
 CONFIG_MAIN_STACK_SIZE=1024
 CONFIG_COVERAGE=n
+
+CONFIG_SMP=n
diff --git a/tests/drivers/ipm/testcase.yaml b/tests/drivers/ipm/testcase.yaml
index 469feaf29cfff..0095e7c8ea42f 100644
--- a/tests/drivers/ipm/testcase.yaml
+++ b/tests/drivers/ipm/testcase.yaml
@@ -2,5 +2,4 @@ tests:
   peripheral.mailbox:
     filter: not CONFIG_SOC_QUARK_SE_C1000_SS
     arch_exclude: posix xtensa
-    platform_exclude: qemu_x86_64 # see issue #12478
     tags: drivers ipc