diff --git a/tests/ResourceTrackingTests.cpp b/tests/ResourceTrackingTests.cpp
index 9a3d96469..3e3f63102 100644
--- a/tests/ResourceTrackingTests.cpp
+++ b/tests/ResourceTrackingTests.cpp
@@ -5047,9 +5047,14 @@ void TestSharedAppendSelectorBounds() {
   Check(MaterializeResources(plan, runtime, snapshot, specialization) &&
             snapshot.images.size() == 2u && snapshot.images.back().dwords[0] == 0x104u,
         "shared append materialization reused stale selector contents");
+  // Record 1 lies past a one-record V#, so its scalar key reads zero instead of key 4.
   user_data[2] = 1u;
-  Check(!MaterializeResources(plan, runtime, snapshot, specialization),
-        "shared append materialization accepted a range outside its V# bounds");
+  memory.fail_address = 0x1000u + 144u + 160u;
+  Check(MaterializeResources(plan, runtime, snapshot, specialization) &&
+            snapshot.images.size() == 2u && snapshot.images[0].dwords[0] == 0x100u &&
+            snapshot.images[1].dwords[0] == 0x101u,
+        "shared append materialization did not read records past its V# as zero");
+  memory.fail_address = UINT64_MAX;
   user_data[2] = 8u;
   for (const auto too_large : {65537u, UINT32_MAX}) {
     for (uint32_t list = 0; list < 2u; ++list) {
diff --git a/tests/shaderCfgTests.cpp b/tests/shaderCfgTests.cpp
index c773fd8d9..c5ffb57ef 100644
--- a/tests/shaderCfgTests.cpp
+++ b/tests/shaderCfgTests.cpp
@@ -15160,7 +15160,7 @@ void TestBoundedScalarMaterialImageKeys() {
       }
       return true;
     }
-    for (const uint32_t key : {5567u, 5582u, 5573u, 5588u}) {
+    for (const uint32_t key : {0u, 5567u, 5582u, 5573u, 5588u}) {
       if (address != 0x100000u + key * 32u || words.size() != 8) continue;
       ++m.images;
       std::ranges::fill(words, 0u);
@@ -15222,9 +15222,17 @@ void TestBoundedScalarMaterialImageKeys() {
     Check(!MaterializeResources(plan, runtime, snapshot, specialization),
           "unavailable selected material key was accepted");
   }
+  // Row 1's 0x94 key straddles a 311-byte V#, so it reads zero instead of 5573.
   memory = {.stride = 1, .records = 311};
-  Check(!MaterializeResources(plan, runtime, snapshot, specialization) && memory.key_reads == 0,
-        "scalar material byte range escaped V# bounds");
+  Check(MaterializeResources(plan, runtime, snapshot, specialization),
+        "scalar material table past its V# was rejected");
+  for (uint32_t root = 0; root < plan.info.images.size(); ++root) {
+    const auto &selector =
+        *plan.descriptor_sources[plan.info.images[root].source].indirect_descriptor->selector;
+    const auto offset = specialization.images[root].indirect_mapping_offset;
+    Check(snapshot.flattened_srt[offset + 1u] == (selector.offset == 0x94u ? 0u : 5567u),
+          "scalar material key past its V# did not read as zero");
+  }
   memory = {.mixed = true};
   Check(MaterializeResources(plan, runtime, snapshot, specialization) &&
             snapshot.images.size() == 4 && specialization.images.size() == 4,