diff --git a/src/dawn_native/Texture.cpp b/src/dawn_native/Texture.cpp
index 8d6bc55..ebbabb7 100644
--- a/src/dawn_native/Texture.cpp
+++ b/src/dawn_native/Texture.cpp
@@ -390,7 +390,9 @@
                     desc.arrayLayerCount = texture->GetArrayLayers() - desc.baseArrayLayer;
                     break;
                 default:
-                    UNREACHABLE();
+                    // We don't put UNREACHABLE() here because we validate enums only after this
+                    // function sets default values. Otherwise, the UNREACHABLE() will be hit.
+                    break;
             }
         }
         if (desc.mipLevelCount == 0) {