diff --git a/lib/posix/options/timer.c b/lib/posix/options/timer.c
index 3c14a01a3add3..e810b4576f7c9 100644
--- a/lib/posix/options/timer.c
+++ b/lib/posix/options/timer.c
@@ -190,7 +190,7 @@ int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid)
 	goto out;
 
 free_timer:
-	k_mem_slab_free(&posix_timer_slab, (void *)&timer);
+	k_mem_slab_free(&posix_timer_slab, (void *)timer);
 
 out:
 	return ret;
diff --git a/tests/posix/timers/prj.conf b/tests/posix/timers/prj.conf
index e6119b6df54f9..8567a0bbf46a1 100644
--- a/tests/posix/timers/prj.conf
+++ b/tests/posix/timers/prj.conf
@@ -3,3 +3,8 @@ CONFIG_ZTEST=y
 
 CONFIG_POSIX_AEP_CHOICE_BASE=y
 CONFIG_POSIX_TIMERS=y
+
+# Needed for timer_create() when using SIGEV_THREAD
+CONFIG_DYNAMIC_THREAD=y
+CONFIG_DYNAMIC_THREAD_POOL_SIZE=1
+CONFIG_THREAD_STACK_INFO=y
diff --git a/tests/posix/timers/src/timer.c b/tests/posix/timers/src/timer.c
index faad7f659fcb2..1d4936d6a4be6 100644
--- a/tests/posix/timers/src/timer.c
+++ b/tests/posix/timers/src/timer.c
@@ -154,14 +154,4 @@ static void after(void *arg)
 	}
 }
 
-static void before(void *arg)
-{
-	ARG_UNUSED(arg);
-
-	if (!IS_ENABLED(CONFIG_DYNAMIC_THREAD)) {
-		/* skip redundant testing if there is no thread pool / heap allocation */
-		ztest_test_skip();
-	}
-}
-
-ZTEST_SUITE(posix_timers, NULL, NULL, before, after, NULL);
+ZTEST_SUITE(posix_timers, NULL, NULL, NULL, after, NULL);