diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index 50c1e9de..2deaa46c 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -1114,6 +1114,8 @@ static inline enum vkd3d_shader_component_type vkd3d_component_type_from_data_ty
             return VKD3D_SHADER_COMPONENT_DOUBLE;
         default:
             FIXME("Unhandled data type %#x.\n", data_type);
+            /* fall-through */
+        case VKD3D_DATA_MIXED:
             return VKD3D_SHADER_COMPONENT_UINT;
     }
 }