diff --git a/components/heap/heap_caps.c b/components/heap/heap_caps.c
index ad971c176..ade724125 100644
--- a/components/heap/heap_caps.c
+++ b/components/heap/heap_caps.c
@@ -295,7 +295,6 @@ IRAM_ATTR void *heap_caps_realloc( void *ptr, size_t size, int caps)
     void *new_p = heap_caps_malloc(size, caps);
     if (new_p != NULL) {
         size_t old_size = multi_heap_get_allocated_size(heap->heap, ptr);
-        assert(old_size > 0);
         memcpy(new_p, ptr, MIN(size, old_size));
         heap_caps_free(ptr);
         return new_p;