diff --git a/src/dawn_native/PipelineLayout.cpp b/src/dawn_native/PipelineLayout.cpp
index f067ec5..96772bd 100644
--- a/src/dawn_native/PipelineLayout.cpp
+++ b/src/dawn_native/PipelineLayout.cpp
@@ -52,6 +52,7 @@
 
     const BindGroupLayoutBase* PipelineLayoutBase::GetBindGroupLayout(size_t group) const {
         ASSERT(group < kMaxBindGroups);
+        ASSERT(mMask[group]);
         return mBindGroupLayouts[group].Get();
     }
 
diff --git a/src/dawn_native/ShaderModule.cpp b/src/dawn_native/ShaderModule.cpp
index d7867a3..7a0e49e 100644
--- a/src/dawn_native/ShaderModule.cpp
+++ b/src/dawn_native/ShaderModule.cpp
@@ -227,11 +227,20 @@
     }
 
     bool ShaderModuleBase::IsCompatibleWithPipelineLayout(const PipelineLayoutBase* layout) {
-        for (size_t group = 0; group < kMaxBindGroups; ++group) {
+        for (uint32_t group : IterateBitSet(layout->GetBindGroupLayoutsMask())) {
             if (!IsCompatibleWithBindGroupLayout(group, layout->GetBindGroupLayout(group))) {
                 return false;
             }
         }
+
+        for (uint32_t group : IterateBitSet(~layout->GetBindGroupLayoutsMask())) {
+            for (size_t i = 0; i < kMaxBindingsPerGroup; ++i) {
+                if (mBindingInfo[group][i].used) {
+                    return false;
+                }
+            }
+        }
+
         return true;
     }
 
diff --git a/src/dawn_native/d3d12/ShaderModuleD3D12.cpp b/src/dawn_native/d3d12/ShaderModuleD3D12.cpp
index 9911d51..b9ec960 100644
--- a/src/dawn_native/d3d12/ShaderModuleD3D12.cpp
+++ b/src/dawn_native/d3d12/ShaderModuleD3D12.cpp
@@ -15,6 +15,7 @@
 #include "dawn_native/d3d12/ShaderModuleD3D12.h"
 
 #include "common/Assert.h"
+#include "common/BitSetIterator.h"
 #include "dawn_native/d3d12/BindGroupLayoutD3D12.h"
 #include "dawn_native/d3d12/DeviceD3D12.h"
 #include "dawn_native/d3d12/PipelineLayoutD3D12.h"
@@ -45,7 +46,7 @@
         compiler.set_hlsl_options(options_hlsl);
 
         const ModuleBindingInfo& moduleBindingInfo = GetBindingInfo();
-        for (uint32_t group = 0; group < moduleBindingInfo.size(); ++group) {
+        for (uint32_t group : IterateBitSet(layout->GetBindGroupLayoutsMask())) {
             const auto& bindingOffsets =
                 ToBackend(layout->GetBindGroupLayout(group))->GetBindingOffsets();
             const auto& groupBindingInfo = moduleBindingInfo[group];