diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index cd938fd5..9870eaeb 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -332,6 +332,9 @@ static void check_condition_type(struct hlsl_ctx *ctx, const struct hlsl_ir_node
 {
     const struct hlsl_type *type = cond->data_type;
 
+    if (type->class == HLSL_CLASS_ERROR)
+        return;
+
     if (type->class > HLSL_CLASS_LAST_NUMERIC || type->dimx > 1 || type->dimy > 1)
     {
         struct vkd3d_string_buffer *string;