diff --git a/otherarch/mpt_v3.cpp b/otherarch/mpt_v3.cpp
index 68ccf49b1..7f16701d1 100644
--- a/otherarch/mpt_v3.cpp
+++ b/otherarch/mpt_v3.cpp
@@ -331,7 +331,8 @@ bool mpt_eval(const mpt_model & model, const int n_threads, const int n_past,
     params.no_alloc   = false;
 
     struct ggml_context * ctx0 = ggml_init(params);
-    struct ggml_cgraph gf = {.n_threads = n_threads};
+    struct ggml_cgraph gf = {};
+    gf.n_threads = n_threads;
 
     struct ggml_tensor * embd = ggml_new_tensor_1d(ctx0, GGML_TYPE_I32, N);
     memcpy(embd->data, embd_inp.data(), N * ggml_element_size(embd));