diff --git a/ggml/src/ggml-backend.c b/ggml/src/ggml-backend.c
index 13c71c310..dbbaa3941 100644
--- a/ggml/src/ggml-backend.c
+++ b/ggml/src/ggml-backend.c
@@ -394,7 +394,7 @@ void ggml_backend_event_wait(ggml_backend_t backend, ggml_backend_event_t event)
 
 // backend registry
 
-#define GGML_REG_MAX_BACKENDS 16
+#define GGML_REG_MAX_BACKENDS 64
 
 struct ggml_backend_reg {
     char name[128];
diff --git a/ggml/src/ggml-sycl.cpp b/ggml/src/ggml-sycl.cpp
index ccca85a59..5a890237f 100644
--- a/ggml/src/ggml-sycl.cpp
+++ b/ggml/src/ggml-sycl.cpp
@@ -5194,6 +5194,10 @@ GGML_CALL static bool ggml_backend_sycl_supports_op(ggml_backend_t backend, cons
                         return false;
                     }
                 }
+                ggml_type src0_type = op->src[0]->type;
+                if (src0_type == GGML_TYPE_BF16) {
+                    return false;
+                }
                 return true;
             } break;
         case GGML_OP_GET_ROWS: