diff --git a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
index 40f6cd1..dcf8451 100644
--- a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
@@ -659,6 +659,7 @@
                 ASSERT_NE(nullptr, burst.get());
 
                 // associate a unique slot with each memory pool
+                constexpr int64_t kIgnoreSlot = -1;
                 int64_t currentSlot = 0;
                 std::vector<int64_t> slots;
                 slots.reserve(request.pools.size());
@@ -667,7 +668,7 @@
                         slots.push_back(currentSlot++);
                     } else {
                         EXPECT_EQ(pool.getTag(), RequestMemoryPool::Tag::token);
-                        slots.push_back(-1);
+                        slots.push_back(kIgnoreSlot);
                     }
                 }
 
@@ -698,8 +699,10 @@
                 // Mark each slot as unused after the execution. This is unnecessary because the
                 // burst is freed after this scope ends, but this is here to test the functionality.
                 for (int64_t slot : slots) {
-                    ret = burst->releaseMemoryResource(slot);
-                    ASSERT_TRUE(ret.isOk()) << ret.getDescription();
+                    if (slot != kIgnoreSlot) {
+                        ret = burst->releaseMemoryResource(slot);
+                        ASSERT_TRUE(ret.isOk()) << ret.getDescription();
+                    }
                 }
 
                 break;