diff --git a/src/dawn_native/ShaderModule.cpp b/src/dawn_native/ShaderModule.cpp
index 0cd9692123..be78a2e359 100644
--- a/src/dawn_native/ShaderModule.cpp
+++ b/src/dawn_native/ShaderModule.cpp
@@ -119,8 +119,13 @@ namespace dawn_native {
                     return wgpu::BindingType::WriteonlyStorageTexture;
                 case shaderc_spvc_binding_type_storage_texture:
                     return wgpu::BindingType::StorageTexture;
+                default:
+                    // This default needs to be here temporarily, to avoid
+                    // build/dependency issues when spvc adds a new entry to the
+                    // enum. Once the new entry is available I will land a
+                    // second patch to remove this default.
+                    UNREACHABLE();
             }
-            UNREACHABLE();
         }
 
         SingleShaderStage ToSingleShaderStage(shaderc_spvc_execution_model execution_model) {