diff --git a/ggml-alloc.c b/ggml-alloc.c
index 5e1be61ff..ddf973dae 100644
--- a/ggml-alloc.c
+++ b/ggml-alloc.c
@@ -104,6 +104,10 @@ static size_t ggml_allocator_get_alloc_size(struct ggml_allocr * alloc, struct g
 }
 
 void ggml_allocr_alloc(struct ggml_allocr * alloc, struct ggml_tensor * tensor) {
+#ifdef GGML_ALLOCATOR_DEBUG
+    GGML_ASSERT(ggml_is_view(tensor) == false); // views generally get data pointer from one of their sources
+    GGML_ASSERT(tensor->data == NULL); // avoid allocating tensor which already has memory allocated
+#endif
     size_t size = ggml_allocator_get_alloc_size(alloc, tensor);
     size = aligned_offset(NULL, size, alloc->alignment);