diff --git a/tests/kernel/msgq/msgq_usage/testcase.yaml b/tests/kernel/msgq/msgq_usage/testcase.yaml
index 0793df32dce..973cc612ef0 100644
--- a/tests/kernel/msgq/msgq_usage/testcase.yaml
+++ b/tests/kernel/msgq/msgq_usage/testcase.yaml
@@ -1,5 +1,6 @@
 tests:
   kernel.message_queue.usage:
+    min_ram: 24
     tags:
       - kernel
       - message queue
diff --git a/tests/posix/xsi_single_process/testcase.yaml b/tests/posix/xsi_single_process/testcase.yaml
index 7c9b06b13b9..ab7366ed3dc 100644
--- a/tests/posix/xsi_single_process/testcase.yaml
+++ b/tests/posix/xsi_single_process/testcase.yaml
@@ -28,6 +28,7 @@ tests:
       - CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=256
   portability.xsi.single_process.newlib:
     filter: TOOLCHAIN_HAS_NEWLIB == 1
+    min_ram: 24
     extra_configs:
       - CONFIG_NEWLIB_LIBC=y
       - CONFIG_NEWLIB_LIBC_MIN_REQUIRED_HEAP_SIZE=256