1 files changed, 5 insertions, 2 deletions
diff --git a/src/c-ringbuf/ringbuf.c b/src/c-ringbuf/ringbuf.c
index 048a622..8b8a738 100644
--- a/src/c-ringbuf/ringbuf.c
+++ b/src/c-ringbuf/ringbuf.c
@@ -284,9 +284,12 @@ ringbuf_memcpy_from(void *dst, ringbuf_t src, size_t count, bool destroy)
     if (!destroy)
     {
         src->tail = tail;
+        assert(ringbuf_bytes_used(src) == bytes_used);
+    }
+    else
+    {
+        assert(count + ringbuf_bytes_used(src) == bytes_used);
     }
-    
-    assert(count + ringbuf_bytes_used(src) == bytes_used);
     return src->tail;
 }