diff --git a/src/pipeline/request.cpp b/src/pipeline/request.cpp
index 1df3e9f1..dee87708 100644
--- a/src/pipeline/request.cpp
+++ b/src/pipeline/request.cpp
@@ -320,6 +320,11 @@ namespace sd::pipeline {
     }
 
     void GenerationRequest::resolve(StableDiffusionGGML* sd) {
+        if (sd_version_is_minit2i(sd->version) && (width != 512 || height != 512)) {
+	    width = 512;
+	    height = 512;
+	    LOG_WARN("align to fixed size 512x512 for MiniT2I");
+        }
         align_generation_request_size();
         resolve_hires();
         seed = resolve_seed(seed);