diff --git a/ggml-sycl.cpp b/ggml-sycl.cpp
index caffe9b02..5c8803653 100644
--- a/ggml-sycl.cpp
+++ b/ggml-sycl.cpp
@@ -11946,7 +11946,8 @@ inline void ggml_sycl_op_mul_mat_vec_q(
     // TODO: support these quantization types
     GGML_ASSERT(!(src0->type == GGML_TYPE_IQ2_XXS ||
                   src0->type == GGML_TYPE_IQ2_XS ||
-                  src0->type == GGML_TYPE_IQ3_XXS));
+                  src0->type == GGML_TYPE_IQ3_XXS ||
+                  src0->type == GGML_TYPE_IQ1_S));
 
     switch (src0->type) {
         case GGML_TYPE_Q4_0:
@@ -14965,7 +14966,10 @@ static bool ggml_backend_sycl_supports_op(ggml_backend_t backend, const ggml_ten
                 if (a->ne[3] != b->ne[3]) {
                     return false;
                 }
-
+                
+                if (a->type == GGML_TYPE_IQ1_S) {
+                    return false;
+                }
                 if (a->type == GGML_TYPE_IQ3_XXS) {
                   return false;
                 }