diff --git a/tests/core/container/test_core_avl.odin b/tests/core/container/test_core_avl.odin
index 37b21a6be..99dbba8b2 100644
--- a/tests/core/container/test_core_avl.odin
+++ b/tests/core/container/test_core_avl.odin
@@ -8,7 +8,7 @@ import "core:log"
 
 @(test)
 test_avl :: proc(t: ^testing.T) {
-	log.infof("Testing avl, using random seed %v, add -define:RANDOM_SEED=%v to reuse it.", random_seed, random_seed)
+	log.infof("Testing avl using random seed %v.", t.seed)
 
 	// Initialization.
 	tree: avl.Tree(int)
@@ -21,7 +21,7 @@ test_avl :: proc(t: ^testing.T) {
 	testing.expect(t, avl.iterator_get(&iter) == nil, "empty/iterator: first node should be nil")
 
 	r: rand.Rand
-	rand.init(&r, random_seed)
+	rand.init(&r, t.seed)
 
 	// Test insertion.
 	NR_INSERTS :: 32 + 1 // Ensure at least 1 collision.
diff --git a/tests/core/container/test_core_rbtree.odin b/tests/core/container/test_core_rbtree.odin
index a4151d120..8def8edb6 100644
--- a/tests/core/container/test_core_rbtree.odin
+++ b/tests/core/container/test_core_rbtree.odin
@@ -8,12 +8,6 @@ import "core:mem"
 import "core:slice"
 import "core:log"
 
-@(private)
-_RANDOM_SEED :: #config(RANDOM_SEED, u64(0))
-
-// Exported
-random_seed := u64(intrinsics.read_cycle_counter()) when _RANDOM_SEED == 0 else u64(_RANDOM_SEED)
-
 test_rbtree_integer :: proc(t: ^testing.T, $Key: typeid, $Value: typeid) {
 	track: mem.Tracking_Allocator
 	mem.tracking_allocator_init(&track, context.allocator)
@@ -21,9 +15,9 @@ test_rbtree_integer :: proc(t: ^testing.T, $Key: typeid, $Value: typeid) {
 	context.allocator = mem.tracking_allocator(&track)
 
 	r: rand.Rand
-	rand.init(&r, random_seed)
+	rand.init(&r, t.seed)
 
-	log.infof("Testing Red-Black Tree($Key=%v,$Value=%v), using random seed %v, add -define:RANDOM_SEED=%v to reuse it.", type_info_of(Key), type_info_of(Value), random_seed, random_seed)
+	log.infof("Testing Red-Black Tree($Key=%v,$Value=%v) using random seed %v.", type_info_of(Key), type_info_of(Value), t.seed)
 	tree: rb.Tree(Key, Value)
 	rb.init(&tree)
 
@@ -243,4 +237,4 @@ verify_rbtree_propery_5_helper :: proc(t: ^testing.T, n: ^$N/rb.Node($Key, $Valu
 	verify_rbtree_propery_5_helper(t, n._right, black_count, path_black_count)
 }
 // Properties 4 and 5 together guarantee that no path in the tree is more than about twice as long as any other path,
-// which guarantees that it has O(log n) height.
\ No newline at end of file
+// which guarantees that it has O(log n) height.